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Finding the Fourth Proportional to 74,079, 102,229.02 and 40,545

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Solution

The fourth proportional to 74,079, 102,229.02 and 40,545 is: 55,952.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,079 : 102,229.02 = 40,545 : x
  2. Step 2: Convert to fraction form
    74,079/102,229.02 = 40,545/x
  3. Step 3: Cross multiply
    74,079x = 102,229.02 × 40,545
  4. Step 4: Simplify right side
    74,079x = 4,144,875,615.90
  5. Step 5: Solve for x
    x = 4,144,875,615.90/74,079
  6. Step 6: Final answer
    x = 55,952.10

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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.