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Finding the Fourth Proportional to 71,241, 98,304.07 and 39,405.57

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Solution

The fourth proportional to 71,241, 98,304.07 and 39,405.57 is: 54,374.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,241 : 98,304.07 = 39,405.57 : x
  2. Step 2: Convert to fraction form
    71,241/98,304.07 = 39,405.57/x
  3. Step 3: Cross multiply
    71,241x = 98,304.07 × 39,405.57
  4. Step 4: Simplify right side
    71,241x = 3,873,727,911.67
  5. Step 5: Solve for x
    x = 3,873,727,911.67/71,241
  6. Step 6: Final answer
    x = 54,374.98

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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.