Home / 74,123.76-102,290.04-40,131.39

Finding the Fourth Proportional to 74,123.76, 102,290.04 and 40,131.39

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Solution

The fourth proportional to 74,123.76, 102,290.04 and 40,131.39 is: 55,380.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,123.76 : 102,290.04 = 40,131.39 : x
  2. Step 2: Convert to fraction form
    74,123.76/102,290.04 = 40,131.39/x
  3. Step 3: Cross multiply
    74,123.76x = 102,290.04 × 40,131.39
  4. Step 4: Simplify right side
    74,123.76x = 4,105,041,488.36
  5. Step 5: Solve for x
    x = 4,105,041,488.36/74,123.76
  6. Step 6: Final answer
    x = 55,380.91

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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.