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Finding the Fourth Proportional to 47,397.80, 71,109.98 and 20,746.11

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Solution

The fourth proportional to 47,397.80, 71,109.98 and 20,746.11 is: 31,124.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,397.80 : 71,109.98 = 20,746.11 : x
  2. Step 2: Convert to fraction form
    47,397.80/71,109.98 = 20,746.11/x
  3. Step 3: Cross multiply
    47,397.80x = 71,109.98 × 20,746.11
  4. Step 4: Simplify right side
    47,397.80x = 1,475,255,519.04
  5. Step 5: Solve for x
    x = 1,475,255,519.04/47,397.80
  6. Step 6: Final answer
    x = 31,124.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.