Home / 74,123.16-102,290.02-40,131.66

Finding the Fourth Proportional to 74,123.16, 102,290.02 and 40,131.66

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Solution

The fourth proportional to 74,123.16, 102,290.02 and 40,131.66 is: 55,381.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,123.16 : 102,290.02 = 40,131.66 : x
  2. Step 2: Convert to fraction form
    74,123.16/102,290.02 = 40,131.66/x
  3. Step 3: Cross multiply
    74,123.16x = 102,290.02 × 40,131.66
  4. Step 4: Simplify right side
    74,123.16x = 4,105,068,304.03
  5. Step 5: Solve for x
    x = 4,105,068,304.03/74,123.16
  6. Step 6: Final answer
    x = 55,381.72

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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.