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Finding the Fourth Proportional to 66,569.92, 91,866.35 and 39,748.52

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Solution

The fourth proportional to 66,569.92, 91,866.35 and 39,748.52 is: 54,852.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,569.92 : 91,866.35 = 39,748.52 : x
  2. Step 2: Convert to fraction form
    66,569.92/91,866.35 = 39,748.52/x
  3. Step 3: Cross multiply
    66,569.92x = 91,866.35 × 39,748.52
  4. Step 4: Simplify right side
    66,569.92x = 3,651,551,779.34
  5. Step 5: Solve for x
    x = 3,651,551,779.34/66,569.92
  6. Step 6: Final answer
    x = 54,852.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.