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Finding the Fourth Proportional to 65,672.40, 98,510.76 and 21,299.52

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Solution

The fourth proportional to 65,672.40, 98,510.76 and 21,299.52 is: 31,949.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,672.40 : 98,510.76 = 21,299.52 : x
  2. Step 2: Convert to fraction form
    65,672.40/98,510.76 = 21,299.52/x
  3. Step 3: Cross multiply
    65,672.40x = 98,510.76 × 21,299.52
  4. Step 4: Simplify right side
    65,672.40x = 2,098,231,902.84
  5. Step 5: Solve for x
    x = 2,098,231,902.84/65,672.40
  6. Step 6: Final answer
    x = 31,949.98

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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.