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Finding the Fourth Proportional to 63,685.55, 87,863.64 and 38,200.16

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Solution

The fourth proportional to 63,685.55, 87,863.64 and 38,200.16 is: 52,702.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,685.55 : 87,863.64 = 38,200.16 : x
  2. Step 2: Convert to fraction form
    63,685.55/87,863.64 = 38,200.16/x
  3. Step 3: Cross multiply
    63,685.55x = 87,863.64 × 38,200.16
  4. Step 4: Simplify right side
    63,685.55x = 3,356,404,666.86
  5. Step 5: Solve for x
    x = 3,356,404,666.86/63,685.55
  6. Step 6: Final answer
    x = 52,702.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.