Home / 78,399.29-108,186.92-42,589.19

Finding the Fourth Proportional to 78,399.29, 108,186.92 and 42,589.19

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Solution

The fourth proportional to 78,399.29, 108,186.92 and 42,589.19 is: 58,770.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,399.29 : 108,186.92 = 42,589.19 : x
  2. Step 2: Convert to fraction form
    78,399.29/108,186.92 = 42,589.19/x
  3. Step 3: Cross multiply
    78,399.29x = 108,186.92 × 42,589.19
  4. Step 4: Simplify right side
    78,399.29x = 4,607,592,750.46
  5. Step 5: Solve for x
    x = 4,607,592,750.46/78,399.29
  6. Step 6: Final answer
    x = 58,770.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.