Home / 78,454.43-108,269.24-42,646.87

Finding the Fourth Proportional to 78,454.43, 108,269.24 and 42,646.87

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Solution

The fourth proportional to 78,454.43, 108,269.24 and 42,646.87 is: 58,853.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,454.43 : 108,269.24 = 42,646.87 : x
  2. Step 2: Convert to fraction form
    78,454.43/108,269.24 = 42,646.87/x
  3. Step 3: Cross multiply
    78,454.43x = 108,269.24 × 42,646.87
  4. Step 4: Simplify right side
    78,454.43x = 4,617,344,203.28
  5. Step 5: Solve for x
    x = 4,617,344,203.28/78,454.43
  6. Step 6: Final answer
    x = 58,853.84

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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.