Home / 72,732.16-100,256-66,630.42

Finding the Fourth Proportional to 72,732.16, 100,256 and 66,630.42

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Solution

The fourth proportional to 72,732.16, 100,256 and 66,630.42 is: 91,845.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,732.16 : 100,256 = 66,630.42 : x
  2. Step 2: Convert to fraction form
    72,732.16/100,256 = 66,630.42/x
  3. Step 3: Cross multiply
    72,732.16x = 100,256 × 66,630.42
  4. Step 4: Simplify right side
    72,732.16x = 6,680,099,387.52
  5. Step 5: Solve for x
    x = 6,680,099,387.52/72,732.16
  6. Step 6: Final answer
    x = 91,845.19

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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.