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Finding the Fourth Proportional to 66,551.78, 99,851.43 and 28,585.10

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Solution

The fourth proportional to 66,551.78, 99,851.43 and 28,585.10 is: 42,887.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,551.78 : 99,851.43 = 28,585.10 : x
  2. Step 2: Convert to fraction form
    66,551.78/99,851.43 = 28,585.10/x
  3. Step 3: Cross multiply
    66,551.78x = 99,851.43 × 28,585.10
  4. Step 4: Simplify right side
    66,551.78x = 2,854,263,111.69
  5. Step 5: Solve for x
    x = 2,854,263,111.69/66,551.78
  6. Step 6: Final answer
    x = 42,887.86

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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.