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Finding the Fourth Proportional to 64,781.32, 96,952.50 and 39,837.18

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Solution

The fourth proportional to 64,781.32, 96,952.50 and 39,837.18 is: 59,620.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,781.32 : 96,952.50 = 39,837.18 : x
  2. Step 2: Convert to fraction form
    64,781.32/96,952.50 = 39,837.18/x
  3. Step 3: Cross multiply
    64,781.32x = 96,952.50 × 39,837.18
  4. Step 4: Simplify right side
    64,781.32x = 3,862,314,193.95
  5. Step 5: Solve for x
    x = 3,862,314,193.95/64,781.32
  6. Step 6: Final answer
    x = 59,620.80

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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.