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Finding the Fourth Proportional to 71,671.84, 98,920.85 and 47,473.09

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Solution

The fourth proportional to 71,671.84, 98,920.85 and 47,473.09 is: 65,521.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,671.84 : 98,920.85 = 47,473.09 : x
  2. Step 2: Convert to fraction form
    71,671.84/98,920.85 = 47,473.09/x
  3. Step 3: Cross multiply
    71,671.84x = 98,920.85 × 47,473.09
  4. Step 4: Simplify right side
    71,671.84x = 4,696,077,930.26
  5. Step 5: Solve for x
    x = 4,696,077,930.26/71,671.84
  6. Step 6: Final answer
    x = 65,521.94

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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.