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Finding the Fourth Proportional to 72,650.52, 100,252.20 and 40,813.20

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Solution

The fourth proportional to 72,650.52, 100,252.20 and 40,813.20 is: 56,319.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,650.52 : 100,252.20 = 40,813.20 : x
  2. Step 2: Convert to fraction form
    72,650.52/100,252.20 = 40,813.20/x
  3. Step 3: Cross multiply
    72,650.52x = 100,252.20 × 40,813.20
  4. Step 4: Simplify right side
    72,650.52x = 4,091,613,089.04
  5. Step 5: Solve for x
    x = 4,091,613,089.04/72,650.52
  6. Step 6: Final answer
    x = 56,319.12

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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.