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Finding the Fourth Proportional to 83,445.76, 125,157.12 and 28,034.56

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Solution

The fourth proportional to 83,445.76, 125,157.12 and 28,034.56 is: 42,047.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,445.76 : 125,157.12 = 28,034.56 : x
  2. Step 2: Convert to fraction form
    83,445.76/125,157.12 = 28,034.56/x
  3. Step 3: Cross multiply
    83,445.76x = 125,157.12 × 28,034.56
  4. Step 4: Simplify right side
    83,445.76x = 3,508,724,790.07
  5. Step 5: Solve for x
    x = 3,508,724,790.07/83,445.76
  6. Step 6: Final answer
    x = 42,047.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.