Home / 74,370.85-102,631.17-40,378.66

Finding the Fourth Proportional to 74,370.85, 102,631.17 and 40,378.66

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Solution

The fourth proportional to 74,370.85, 102,631.17 and 40,378.66 is: 55,722.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,370.85 : 102,631.17 = 40,378.66 : x
  2. Step 2: Convert to fraction form
    74,370.85/102,631.17 = 40,378.66/x
  3. Step 3: Cross multiply
    74,370.85x = 102,631.17 × 40,378.66
  4. Step 4: Simplify right side
    74,370.85x = 4,144,109,118.83
  5. Step 5: Solve for x
    x = 4,144,109,118.83/74,370.85
  6. Step 6: Final answer
    x = 55,722.22

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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.