Home / 78,432.38-108,181.96-51,566.30

Finding the Fourth Proportional to 78,432.38, 108,181.96 and 51,566.30

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Solution

The fourth proportional to 78,432.38, 108,181.96 and 51,566.30 is: 71,125.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,432.38 : 108,181.96 = 51,566.30 : x
  2. Step 2: Convert to fraction form
    78,432.38/108,181.96 = 51,566.30/x
  3. Step 3: Cross multiply
    78,432.38x = 108,181.96 × 51,566.30
  4. Step 4: Simplify right side
    78,432.38x = 5,578,543,403.95
  5. Step 5: Solve for x
    x = 5,578,543,403.95/78,432.38
  6. Step 6: Final answer
    x = 71,125.51

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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.