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Finding the Fourth Proportional to 66,891.87, 100,347.54 and 35,710.11

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Solution

The fourth proportional to 66,891.87, 100,347.54 and 35,710.11 is: 53,570.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,891.87 : 100,347.54 = 35,710.11 : x
  2. Step 2: Convert to fraction form
    66,891.87/100,347.54 = 35,710.11/x
  3. Step 3: Cross multiply
    66,891.87x = 100,347.54 × 35,710.11
  4. Step 4: Simplify right side
    66,891.87x = 3,583,421,691.63
  5. Step 5: Solve for x
    x = 3,583,421,691.63/66,891.87
  6. Step 6: Final answer
    x = 53,570.36

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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.