Home / 86,387.46-129,618.63-42,052.74

Finding the Fourth Proportional to 86,387.46, 129,618.63 and 42,052.74

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Solution

The fourth proportional to 86,387.46, 129,618.63 and 42,052.74 is: 63,097.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,387.46 : 129,618.63 = 42,052.74 : x
  2. Step 2: Convert to fraction form
    86,387.46/129,618.63 = 42,052.74/x
  3. Step 3: Cross multiply
    86,387.46x = 129,618.63 × 42,052.74
  4. Step 4: Simplify right side
    86,387.46x = 5,450,818,546.55
  5. Step 5: Solve for x
    x = 5,450,818,546.55/86,387.46
  6. Step 6: Final answer
    x = 63,097.34

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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.