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Finding the Fourth Proportional to 84,658.71, 116,805.36 and 66,697.98

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Solution

The fourth proportional to 84,658.71, 116,805.36 and 66,697.98 is: 92,024.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,658.71 : 116,805.36 = 66,697.98 : x
  2. Step 2: Convert to fraction form
    84,658.71/116,805.36 = 66,697.98/x
  3. Step 3: Cross multiply
    84,658.71x = 116,805.36 × 66,697.98
  4. Step 4: Simplify right side
    84,658.71x = 7,790,681,565.17
  5. Step 5: Solve for x
    x = 7,790,681,565.17/84,658.71
  6. Step 6: Final answer
    x = 92,024.57

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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.