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Finding the Fourth Proportional to 83,291.72, 124,937.64 and 20,962.22

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Solution

The fourth proportional to 83,291.72, 124,937.64 and 20,962.22 is: 31,443.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,291.72 : 124,937.64 = 20,962.22 : x
  2. Step 2: Convert to fraction form
    83,291.72/124,937.64 = 20,962.22/x
  3. Step 3: Cross multiply
    83,291.72x = 124,937.64 × 20,962.22
  4. Step 4: Simplify right side
    83,291.72x = 2,618,970,295.96
  5. Step 5: Solve for x
    x = 2,618,970,295.96/83,291.72
  6. Step 6: Final answer
    x = 31,443.35

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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.