Home / 86,133.60-129,161.28-30,731.04

Finding the Fourth Proportional to 86,133.60, 129,161.28 and 30,731.04

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Solution

The fourth proportional to 86,133.60, 129,161.28 and 30,731.04 is: 46,082.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,133.60 : 129,161.28 = 30,731.04 : x
  2. Step 2: Convert to fraction form
    86,133.60/129,161.28 = 30,731.04/x
  3. Step 3: Cross multiply
    86,133.60x = 129,161.28 × 30,731.04
  4. Step 4: Simplify right side
    86,133.60x = 3,969,260,462.13
  5. Step 5: Solve for x
    x = 3,969,260,462.13/86,133.60
  6. Step 6: Final answer
    x = 46,082.60

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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.