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Finding the Fourth Proportional to 71,574.48, 98,773.68 and 39,746.40

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Solution

The fourth proportional to 71,574.48, 98,773.68 and 39,746.40 is: 54,850.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,574.48 : 98,773.68 = 39,746.40 : x
  2. Step 2: Convert to fraction form
    71,574.48/98,773.68 = 39,746.40/x
  3. Step 3: Cross multiply
    71,574.48x = 98,773.68 × 39,746.40
  4. Step 4: Simplify right side
    71,574.48x = 3,925,898,194.75
  5. Step 5: Solve for x
    x = 3,925,898,194.75/71,574.48
  6. Step 6: Final answer
    x = 54,850.53

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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.