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Finding the Fourth Proportional to 74,974.55, 112,406.27 and 45,385.38

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Solution

The fourth proportional to 74,974.55, 112,406.27 and 45,385.38 is: 68,044.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,974.55 : 112,406.27 = 45,385.38 : x
  2. Step 2: Convert to fraction form
    74,974.55/112,406.27 = 45,385.38/x
  3. Step 3: Cross multiply
    74,974.55x = 112,406.27 × 45,385.38
  4. Step 4: Simplify right side
    74,974.55x = 5,101,601,051.41
  5. Step 5: Solve for x
    x = 5,101,601,051.41/74,974.55
  6. Step 6: Final answer
    x = 68,044.44

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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.