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Finding the Fourth Proportional to 71,501.96, 98,671.02 and 39,670.04

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Solution

The fourth proportional to 71,501.96, 98,671.02 and 39,670.04 is: 54,743.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,501.96 : 98,671.02 = 39,670.04 : x
  2. Step 2: Convert to fraction form
    71,501.96/98,671.02 = 39,670.04/x
  3. Step 3: Cross multiply
    71,501.96x = 98,671.02 × 39,670.04
  4. Step 4: Simplify right side
    71,501.96x = 3,914,283,310.24
  5. Step 5: Solve for x
    x = 3,914,283,310.24/71,501.96
  6. Step 6: Final answer
    x = 54,743.72

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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.