Home / 78,402.48-108,195.60-42,592.20

Finding the Fourth Proportional to 78,402.48, 108,195.60 and 42,592.20

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Solution

The fourth proportional to 78,402.48, 108,195.60 and 42,592.20 is: 58,777.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,402.48 : 108,195.60 = 42,592.20 : x
  2. Step 2: Convert to fraction form
    78,402.48/108,195.60 = 42,592.20/x
  3. Step 3: Cross multiply
    78,402.48x = 108,195.60 × 42,592.20
  4. Step 4: Simplify right side
    78,402.48x = 4,608,288,634.32
  5. Step 5: Solve for x
    x = 4,608,288,634.32/78,402.48
  6. Step 6: Final answer
    x = 58,777.33

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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.