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Finding the Fourth Proportional to 72,672.70, 101,508.50 and 72,672.70

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Solution

The fourth proportional to 72,672.70, 101,508.50 and 72,672.70 is: 101,508.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,672.70 : 101,508.50 = 72,672.70 : x
  2. Step 2: Convert to fraction form
    72,672.70/101,508.50 = 72,672.70/x
  3. Step 3: Cross multiply
    72,672.70x = 101,508.50 × 72,672.70
  4. Step 4: Simplify right side
    72,672.70x = 7,376,896,767.95
  5. Step 5: Solve for x
    x = 7,376,896,767.95/72,672.70
  6. Step 6: Final answer
    x = 101,508.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.