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Finding the Fourth Proportional to 71,726.40, 98,942.04 and 43,038.66

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Solution

The fourth proportional to 71,726.40, 98,942.04 and 43,038.66 is: 59,369.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,726.40 : 98,942.04 = 43,038.66 : x
  2. Step 2: Convert to fraction form
    71,726.40/98,942.04 = 43,038.66/x
  3. Step 3: Cross multiply
    71,726.40x = 98,942.04 × 43,038.66
  4. Step 4: Simplify right side
    71,726.40x = 4,258,332,819.27
  5. Step 5: Solve for x
    x = 4,258,332,819.27/71,726.40
  6. Step 6: Final answer
    x = 59,369.11

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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.