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Finding the Fourth Proportional to 82,001.20, 122,965.80 and 37,613.20

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Solution

The fourth proportional to 82,001.20, 122,965.80 and 37,613.20 is: 56,403.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,001.20 : 122,965.80 = 37,613.20 : x
  2. Step 2: Convert to fraction form
    82,001.20/122,965.80 = 37,613.20/x
  3. Step 3: Cross multiply
    82,001.20x = 122,965.80 × 37,613.20
  4. Step 4: Simplify right side
    82,001.20x = 4,625,137,228.56
  5. Step 5: Solve for x
    x = 4,625,137,228.56/82,001.20
  6. Step 6: Final answer
    x = 56,403.29

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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.