Home / 78,587.79-108,244.55-60,403.74

Finding the Fourth Proportional to 78,587.79, 108,244.55 and 60,403.74

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Solution

The fourth proportional to 78,587.79, 108,244.55 and 60,403.74 is: 83,198.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,587.79 : 108,244.55 = 60,403.74 : x
  2. Step 2: Convert to fraction form
    78,587.79/108,244.55 = 60,403.74/x
  3. Step 3: Cross multiply
    78,587.79x = 108,244.55 × 60,403.74
  4. Step 4: Simplify right side
    78,587.79x = 6,538,375,352.60
  5. Step 5: Solve for x
    x = 6,538,375,352.60/78,587.79
  6. Step 6: Final answer
    x = 83,198.36

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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.