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Finding the Fourth Proportional to 63,710, 87,915.64 and 35,414.64

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Solution

The fourth proportional to 63,710, 87,915.64 and 35,414.64 is: 48,869.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,710 : 87,915.64 = 35,414.64 : x
  2. Step 2: Convert to fraction form
    63,710/87,915.64 = 35,414.64/x
  3. Step 3: Cross multiply
    63,710x = 87,915.64 × 35,414.64
  4. Step 4: Simplify right side
    63,710x = 3,113,500,740.97
  5. Step 5: Solve for x
    x = 3,113,500,740.97/63,710
  6. Step 6: Final answer
    x = 48,869.89

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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.