Home / 78,451.26-108,259.56-42,640.44

Finding the Fourth Proportional to 78,451.26, 108,259.56 and 42,640.44

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Solution

The fourth proportional to 78,451.26, 108,259.56 and 42,640.44 is: 58,842.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,451.26 : 108,259.56 = 42,640.44 : x
  2. Step 2: Convert to fraction form
    78,451.26/108,259.56 = 42,640.44/x
  3. Step 3: Cross multiply
    78,451.26x = 108,259.56 × 42,640.44
  4. Step 4: Simplify right side
    78,451.26x = 4,616,235,272.61
  5. Step 5: Solve for x
    x = 4,616,235,272.61/78,451.26
  6. Step 6: Final answer
    x = 58,842.08

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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.