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Finding the Fourth Proportional to 63,885.12, 88,124.87 and 39,970.28

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Solution

The fourth proportional to 63,885.12, 88,124.87 and 39,970.28 is: 55,136.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,885.12 : 88,124.87 = 39,970.28 : x
  2. Step 2: Convert to fraction form
    63,885.12/88,124.87 = 39,970.28/x
  3. Step 3: Cross multiply
    63,885.12x = 88,124.87 × 39,970.28
  4. Step 4: Simplify right side
    63,885.12x = 3,522,375,088.39
  5. Step 5: Solve for x
    x = 3,522,375,088.39/63,885.12
  6. Step 6: Final answer
    x = 55,136.08

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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.