Home / 78,348.82-108,122.15-42,539.13

Finding the Fourth Proportional to 78,348.82, 108,122.15 and 42,539.13

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Solution

The fourth proportional to 78,348.82, 108,122.15 and 42,539.13 is: 58,704.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,348.82 : 108,122.15 = 42,539.13 : x
  2. Step 2: Convert to fraction form
    78,348.82/108,122.15 = 42,539.13/x
  3. Step 3: Cross multiply
    78,348.82x = 108,122.15 × 42,539.13
  4. Step 4: Simplify right side
    78,348.82x = 4,599,422,194.73
  5. Step 5: Solve for x
    x = 4,599,422,194.73/78,348.82
  6. Step 6: Final answer
    x = 58,704.42

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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.