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Finding the Fourth Proportional to 71,391.96, 98,565.69 and 45,942.55

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Solution

The fourth proportional to 71,391.96, 98,565.69 and 45,942.55 is: 63,429.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,391.96 : 98,565.69 = 45,942.55 : x
  2. Step 2: Convert to fraction form
    71,391.96/98,565.69 = 45,942.55/x
  3. Step 3: Cross multiply
    71,391.96x = 98,565.69 × 45,942.55
  4. Step 4: Simplify right side
    71,391.96x = 4,528,359,141.11
  5. Step 5: Solve for x
    x = 4,528,359,141.11/71,391.96
  6. Step 6: Final answer
    x = 63,429.54

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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.