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Finding the Fourth Proportional to 75,314.72, 112,793.94 and 65,400.14

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Solution

The fourth proportional to 75,314.72, 112,793.94 and 65,400.14 is: 97,945.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,314.72 : 112,793.94 = 65,400.14 : x
  2. Step 2: Convert to fraction form
    75,314.72/112,793.94 = 65,400.14/x
  3. Step 3: Cross multiply
    75,314.72x = 112,793.94 × 65,400.14
  4. Step 4: Simplify right side
    75,314.72x = 7,376,739,467.15
  5. Step 5: Solve for x
    x = 7,376,739,467.15/75,314.72
  6. Step 6: Final answer
    x = 97,945.52

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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.