Home / 86,242.47-129,380.15-30,098.62

Finding the Fourth Proportional to 86,242.47, 129,380.15 and 30,098.62

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Solution

The fourth proportional to 86,242.47, 129,380.15 and 30,098.62 is: 45,153.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,242.47 : 129,380.15 = 30,098.62 : x
  2. Step 2: Convert to fraction form
    86,242.47/129,380.15 = 30,098.62/x
  3. Step 3: Cross multiply
    86,242.47x = 129,380.15 × 30,098.62
  4. Step 4: Simplify right side
    86,242.47x = 3,894,163,323.49
  5. Step 5: Solve for x
    x = 3,894,163,323.49/86,242.47
  6. Step 6: Final answer
    x = 45,153.66

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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.