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Finding the Fourth Proportional to 66,045.78, 99,024.66 and 21,657.24

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Solution

The fourth proportional to 66,045.78, 99,024.66 and 21,657.24 is: 32,471.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,045.78 : 99,024.66 = 21,657.24 : x
  2. Step 2: Convert to fraction form
    66,045.78/99,024.66 = 21,657.24/x
  3. Step 3: Cross multiply
    66,045.78x = 99,024.66 × 21,657.24
  4. Step 4: Simplify right side
    66,045.78x = 2,144,600,827.54
  5. Step 5: Solve for x
    x = 2,144,600,827.54/66,045.78
  6. Step 6: Final answer
    x = 32,471.43

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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.