Home / 78,403.52-108,125.20-58,310.66

Finding the Fourth Proportional to 78,403.52, 108,125.20 and 58,310.66

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Solution

The fourth proportional to 78,403.52, 108,125.20 and 58,310.66 is: 80,415.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,403.52 : 108,125.20 = 58,310.66 : x
  2. Step 2: Convert to fraction form
    78,403.52/108,125.20 = 58,310.66/x
  3. Step 3: Cross multiply
    78,403.52x = 108,125.20 × 58,310.66
  4. Step 4: Simplify right side
    78,403.52x = 6,304,851,774.63
  5. Step 5: Solve for x
    x = 6,304,851,774.63/78,403.52
  6. Step 6: Final answer
    x = 80,415.42

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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.