Home / 86,569.20-129,859.56-30,402.48

Finding the Fourth Proportional to 86,569.20, 129,859.56 and 30,402.48

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Solution

The fourth proportional to 86,569.20, 129,859.56 and 30,402.48 is: 45,605.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,569.20 : 129,859.56 = 30,402.48 : x
  2. Step 2: Convert to fraction form
    86,569.20/129,859.56 = 30,402.48/x
  3. Step 3: Cross multiply
    86,569.20x = 129,859.56 × 30,402.48
  4. Step 4: Simplify right side
    86,569.20x = 3,948,052,675.71
  5. Step 5: Solve for x
    x = 3,948,052,675.71/86,569.20
  6. Step 6: Final answer
    x = 45,605.74

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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.