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Finding the Fourth Proportional to 71,572.36, 98,769.34 and 39,741.38

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Solution

The fourth proportional to 71,572.36, 98,769.34 and 39,741.38 is: 54,842.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,572.36 : 98,769.34 = 39,741.38 : x
  2. Step 2: Convert to fraction form
    71,572.36/98,769.34 = 39,741.38/x
  3. Step 3: Cross multiply
    71,572.36x = 98,769.34 × 39,741.38
  4. Step 4: Simplify right side
    71,572.36x = 3,925,229,873.29
  5. Step 5: Solve for x
    x = 3,925,229,873.29/71,572.36
  6. Step 6: Final answer
    x = 54,842.82

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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.