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Finding the Fourth Proportional to 86,610.76, 129,920.82 and 24,286.12

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Solution

The fourth proportional to 86,610.76, 129,920.82 and 24,286.12 is: 36,430.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,610.76 : 129,920.82 = 24,286.12 : x
  2. Step 2: Convert to fraction form
    86,610.76/129,920.82 = 24,286.12/x
  3. Step 3: Cross multiply
    86,610.76x = 129,920.82 × 24,286.12
  4. Step 4: Simplify right side
    86,610.76x = 3,155,272,625.02
  5. Step 5: Solve for x
    x = 3,155,272,625.02/86,610.76
  6. Step 6: Final answer
    x = 36,430.49

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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.