Home / 74,123.91-102,291.05-40,132.42

Finding the Fourth Proportional to 74,123.91, 102,291.05 and 40,132.42

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Solution

The fourth proportional to 74,123.91, 102,291.05 and 40,132.42 is: 55,382.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,123.91 : 102,291.05 = 40,132.42 : x
  2. Step 2: Convert to fraction form
    74,123.91/102,291.05 = 40,132.42/x
  3. Step 3: Cross multiply
    74,123.91x = 102,291.05 × 40,132.42
  4. Step 4: Simplify right side
    74,123.91x = 4,105,187,380.84
  5. Step 5: Solve for x
    x = 4,105,187,380.84/74,123.91
  6. Step 6: Final answer
    x = 55,382.77

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1.5x scale

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.