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Finding the Fourth Proportional to 92,499.35, 138,724.72 and 39,897.14

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Solution

The fourth proportional to 92,499.35, 138,724.72 and 39,897.14 is: 59,835.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,499.35 : 138,724.72 = 39,897.14 : x
  2. Step 2: Convert to fraction form
    92,499.35/138,724.72 = 39,897.14/x
  3. Step 3: Cross multiply
    92,499.35x = 138,724.72 × 39,897.14
  4. Step 4: Simplify right side
    92,499.35x = 5,534,718,682.19
  5. Step 5: Solve for x
    x = 5,534,718,682.19/92,499.35
  6. Step 6: Final answer
    x = 59,835.22

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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.