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Finding the Fourth Proportional to 63,781.28, 88,020.24 and 39,900.32

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Solution

The fourth proportional to 63,781.28, 88,020.24 and 39,900.32 is: 55,063.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,781.28 : 88,020.24 = 39,900.32 : x
  2. Step 2: Convert to fraction form
    63,781.28/88,020.24 = 39,900.32/x
  3. Step 3: Cross multiply
    63,781.28x = 88,020.24 × 39,900.32
  4. Step 4: Simplify right side
    63,781.28x = 3,512,035,742.48
  5. Step 5: Solve for x
    x = 3,512,035,742.48/63,781.28
  6. Step 6: Final answer
    x = 55,063.74

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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.