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Finding the Fourth Proportional to 67,419.78, 101,129.67 and 63,264.48

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Solution

The fourth proportional to 67,419.78, 101,129.67 and 63,264.48 is: 94,896.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,419.78 : 101,129.67 = 63,264.48 : x
  2. Step 2: Convert to fraction form
    67,419.78/101,129.67 = 63,264.48/x
  3. Step 3: Cross multiply
    67,419.78x = 101,129.67 × 63,264.48
  4. Step 4: Simplify right side
    67,419.78x = 6,397,915,985.12
  5. Step 5: Solve for x
    x = 6,397,915,985.12/67,419.78
  6. Step 6: Final answer
    x = 94,896.72

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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.