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Finding the Fourth Proportional to 72,874.23, 108,926.78 and 63,311.55

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Solution

The fourth proportional to 72,874.23, 108,926.78 and 63,311.55 is: 94,633.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,874.23 : 108,926.78 = 63,311.55 : x
  2. Step 2: Convert to fraction form
    72,874.23/108,926.78 = 63,311.55/x
  3. Step 3: Cross multiply
    72,874.23x = 108,926.78 × 63,311.55
  4. Step 4: Simplify right side
    72,874.23x = 6,896,323,278.31
  5. Step 5: Solve for x
    x = 6,896,323,278.31/72,874.23
  6. Step 6: Final answer
    x = 94,633.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.