Home / 8,085,127.80-12,127,691.70-5,215,346.40

Finding the Fourth Proportional to 8,085,127.80, 12,127,691.70 and 5,215,346.40

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Solution

The fourth proportional to 8,085,127.80, 12,127,691.70 and 5,215,346.40 is: 7,823,019.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,085,127.80 : 12,127,691.70 = 5,215,346.40 : x
  2. Step 2: Convert to fraction form
    8,085,127.80/12,127,691.70 = 5,215,346.40/x
  3. Step 3: Cross multiply
    8,085,127.80x = 12,127,691.70 × 5,215,346.40
  4. Step 4: Simplify right side
    8,085,127.80x = 63,250,113,247,904.88
  5. Step 5: Solve for x
    x = 63,250,113,247,904.88/8,085,127.80
  6. Step 6: Final answer
    x = 7,823,019.60

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.