Home / 52,101.97-78,152.73-12,659.20

Finding the Fourth Proportional to 52,101.97, 78,152.73 and 12,659.20

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Solution

The fourth proportional to 52,101.97, 78,152.73 and 12,659.20 is: 18,988.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,101.97 : 78,152.73 = 12,659.20 : x
  2. Step 2: Convert to fraction form
    52,101.97/78,152.73 = 12,659.20/x
  3. Step 3: Cross multiply
    52,101.97x = 78,152.73 × 12,659.20
  4. Step 4: Simplify right side
    52,101.97x = 989,351,039.62
  5. Step 5: Solve for x
    x = 989,351,039.62/52,101.97
  6. Step 6: Final answer
    x = 18,988.75

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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.