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Finding the Fourth Proportional to 74,854.66, 103,299.70 and 40,863.90

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Solution

The fourth proportional to 74,854.66, 103,299.70 and 40,863.90 is: 56,392.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,854.66 : 103,299.70 = 40,863.90 : x
  2. Step 2: Convert to fraction form
    74,854.66/103,299.70 = 40,863.90/x
  3. Step 3: Cross multiply
    74,854.66x = 103,299.70 × 40,863.90
  4. Step 4: Simplify right side
    74,854.66x = 4,221,228,610.83
  5. Step 5: Solve for x
    x = 4,221,228,610.83/74,854.66
  6. Step 6: Final answer
    x = 56,392.33

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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.