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Finding the Fourth Proportional to 91,730.63, 126,469.80 and 59,407.85

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Solution

The fourth proportional to 91,730.63, 126,469.80 and 59,407.85 is: 81,906.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,730.63 : 126,469.80 = 59,407.85 : x
  2. Step 2: Convert to fraction form
    91,730.63/126,469.80 = 59,407.85/x
  3. Step 3: Cross multiply
    91,730.63x = 126,469.80 × 59,407.85
  4. Step 4: Simplify right side
    91,730.63x = 7,513,298,275.58
  5. Step 5: Solve for x
    x = 7,513,298,275.58/91,730.63
  6. Step 6: Final answer
    x = 81,906.11

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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.