Home / 86,484.20-129,726.30-82,401.80

Finding the Fourth Proportional to 86,484.20, 129,726.30 and 82,401.80

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Solution

The fourth proportional to 86,484.20, 129,726.30 and 82,401.80 is: 123,602.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,484.20 : 129,726.30 = 82,401.80 : x
  2. Step 2: Convert to fraction form
    86,484.20/129,726.30 = 82,401.80/x
  3. Step 3: Cross multiply
    86,484.20x = 129,726.30 × 82,401.80
  4. Step 4: Simplify right side
    86,484.20x = 10,689,680,627.34
  5. Step 5: Solve for x
    x = 10,689,680,627.34/86,484.20
  6. Step 6: Final answer
    x = 123,602.70

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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.