Home / 78,432.63-108,182.30-51,566.55

Finding the Fourth Proportional to 78,432.63, 108,182.30 and 51,566.55

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Solution

The fourth proportional to 78,432.63, 108,182.30 and 51,566.55 is: 71,125.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,432.63 : 108,182.30 = 51,566.55 : x
  2. Step 2: Convert to fraction form
    78,432.63/108,182.30 = 51,566.55/x
  3. Step 3: Cross multiply
    78,432.63x = 108,182.30 × 51,566.55
  4. Step 4: Simplify right side
    78,432.63x = 5,578,587,724.23
  5. Step 5: Solve for x
    x = 5,578,587,724.23/78,432.63
  6. Step 6: Final answer
    x = 71,125.85

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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.