Home / 74,123.41-102,291.11-40,132.61

Finding the Fourth Proportional to 74,123.41, 102,291.11 and 40,132.61

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Solution

The fourth proportional to 74,123.41, 102,291.11 and 40,132.61 is: 55,383.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,123.41 : 102,291.11 = 40,132.61 : x
  2. Step 2: Convert to fraction form
    74,123.41/102,291.11 = 40,132.61/x
  3. Step 3: Cross multiply
    74,123.41x = 102,291.11 × 40,132.61
  4. Step 4: Simplify right side
    74,123.41x = 4,105,208,712.64
  5. Step 5: Solve for x
    x = 4,105,208,712.64/74,123.41
  6. Step 6: Final answer
    x = 55,383.43

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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.