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Finding the Fourth Proportional to 74,397.56, 102,669.36 and 40,863.56

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Solution

The fourth proportional to 74,397.56, 102,669.36 and 40,863.56 is: 56,392.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,397.56 : 102,669.36 = 40,863.56 : x
  2. Step 2: Convert to fraction form
    74,397.56/102,669.36 = 40,863.56/x
  3. Step 3: Cross multiply
    74,397.56x = 102,669.36 × 40,863.56
  4. Step 4: Simplify right side
    74,397.56x = 4,195,435,552.52
  5. Step 5: Solve for x
    x = 4,195,435,552.52/74,397.56
  6. Step 6: Final answer
    x = 56,392.11

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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.