Home / 78,664.10-108,555.92-42,854.13

Finding the Fourth Proportional to 78,664.10, 108,555.92 and 42,854.13

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Solution

The fourth proportional to 78,664.10, 108,555.92 and 42,854.13 is: 59,138.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,664.10 : 108,555.92 = 42,854.13 : x
  2. Step 2: Convert to fraction form
    78,664.10/108,555.92 = 42,854.13/x
  3. Step 3: Cross multiply
    78,664.10x = 108,555.92 × 42,854.13
  4. Step 4: Simplify right side
    78,664.10x = 4,652,069,507.95
  5. Step 5: Solve for x
    x = 4,652,069,507.95/78,664.10
  6. Step 6: Final answer
    x = 59,138.41

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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.