Home / 86,439.11-129,657.33-52,715.03

Finding the Fourth Proportional to 86,439.11, 129,657.33 and 52,715.03

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Solution

The fourth proportional to 86,439.11, 129,657.33 and 52,715.03 is: 79,071.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,439.11 : 129,657.33 = 52,715.03 : x
  2. Step 2: Convert to fraction form
    86,439.11/129,657.33 = 52,715.03/x
  3. Step 3: Cross multiply
    86,439.11x = 129,657.33 × 52,715.03
  4. Step 4: Simplify right side
    86,439.11x = 6,834,889,392.38
  5. Step 5: Solve for x
    x = 6,834,889,392.38/86,439.11
  6. Step 6: Final answer
    x = 79,071.73

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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.