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Finding the Fourth Proportional to 77,951.55, 107,602.17 and 60,689.64

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Solution

The fourth proportional to 77,951.55, 107,602.17 and 60,689.64 is: 83,774.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,951.55 : 107,602.17 = 60,689.64 : x
  2. Step 2: Convert to fraction form
    77,951.55/107,602.17 = 60,689.64/x
  3. Step 3: Cross multiply
    77,951.55x = 107,602.17 × 60,689.64
  4. Step 4: Simplify right side
    77,951.55x = 6,530,336,960.52
  5. Step 5: Solve for x
    x = 6,530,336,960.52/77,951.55
  6. Step 6: Final answer
    x = 83,774.31

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1.5x scale

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.