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Finding the Fourth Proportional to 65,951.40, 98,925.96 and 20,972.56

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Solution

The fourth proportional to 65,951.40, 98,925.96 and 20,972.56 is: 31,458.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,951.40 : 98,925.96 = 20,972.56 : x
  2. Step 2: Convert to fraction form
    65,951.40/98,925.96 = 20,972.56/x
  3. Step 3: Cross multiply
    65,951.40x = 98,925.96 × 20,972.56
  4. Step 4: Simplify right side
    65,951.40x = 2,074,730,631.66
  5. Step 5: Solve for x
    x = 2,074,730,631.66/65,951.40
  6. Step 6: Final answer
    x = 31,458.48

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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.