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Finding the Fourth Proportional to 66,368.92, 99,592.28 and 47,628.76

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Solution

The fourth proportional to 66,368.92, 99,592.28 and 47,628.76 is: 71,471.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,368.92 : 99,592.28 = 47,628.76 : x
  2. Step 2: Convert to fraction form
    66,368.92/99,592.28 = 47,628.76/x
  3. Step 3: Cross multiply
    66,368.92x = 99,592.28 × 47,628.76
  4. Step 4: Simplify right side
    66,368.92x = 4,743,456,801.97
  5. Step 5: Solve for x
    x = 4,743,456,801.97/66,368.92
  6. Step 6: Final answer
    x = 71,471.06

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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.