Home / 86,139.02-129,174.68-36,243.02

Finding the Fourth Proportional to 86,139.02, 129,174.68 and 36,243.02

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Solution

The fourth proportional to 86,139.02, 129,174.68 and 36,243.02 is: 54,350.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,139.02 : 129,174.68 = 36,243.02 : x
  2. Step 2: Convert to fraction form
    86,139.02/129,174.68 = 36,243.02/x
  3. Step 3: Cross multiply
    86,139.02x = 129,174.68 × 36,243.02
  4. Step 4: Simplify right side
    86,139.02x = 4,681,679,955.47
  5. Step 5: Solve for x
    x = 4,681,679,955.47/86,139.02
  6. Step 6: Final answer
    x = 54,350.28

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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.