Home / 85,363.35-128,045.03-54,336.15

Finding the Fourth Proportional to 85,363.35, 128,045.03 and 54,336.15

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Solution

The fourth proportional to 85,363.35, 128,045.03 and 54,336.15 is: 81,504.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,363.35 : 128,045.03 = 54,336.15 : x
  2. Step 2: Convert to fraction form
    85,363.35/128,045.03 = 54,336.15/x
  3. Step 3: Cross multiply
    85,363.35x = 128,045.03 × 54,336.15
  4. Step 4: Simplify right side
    85,363.35x = 6,957,473,685.15
  5. Step 5: Solve for x
    x = 6,957,473,685.15/85,363.35
  6. Step 6: Final answer
    x = 81,504.23

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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.