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Finding the Fourth Proportional to 74,884.66, 111,753.85 and 66,897.48

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Solution

The fourth proportional to 74,884.66, 111,753.85 and 66,897.48 is: 99,834.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,884.66 : 111,753.85 = 66,897.48 : x
  2. Step 2: Convert to fraction form
    74,884.66/111,753.85 = 66,897.48/x
  3. Step 3: Cross multiply
    74,884.66x = 111,753.85 × 66,897.48
  4. Step 4: Simplify right side
    74,884.66x = 7,476,051,197.13
  5. Step 5: Solve for x
    x = 7,476,051,197.13/74,884.66
  6. Step 6: Final answer
    x = 99,834.22

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.