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Finding the Fourth Proportional to 91,760.30, 137,640.45 and 63,766.70

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Solution

The fourth proportional to 91,760.30, 137,640.45 and 63,766.70 is: 95,650.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,760.30 : 137,640.45 = 63,766.70 : x
  2. Step 2: Convert to fraction form
    91,760.30/137,640.45 = 63,766.70/x
  3. Step 3: Cross multiply
    91,760.30x = 137,640.45 × 63,766.70
  4. Step 4: Simplify right side
    91,760.30x = 8,776,877,283.02
  5. Step 5: Solve for x
    x = 8,776,877,283.02/91,760.30
  6. Step 6: Final answer
    x = 95,650.05

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1.5x scale

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.