Home / 74,152.90-102,331.31-40,161.79

Finding the Fourth Proportional to 74,152.90, 102,331.31 and 40,161.79

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Solution

The fourth proportional to 74,152.90, 102,331.31 and 40,161.79 is: 55,423.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,152.90 : 102,331.31 = 40,161.79 : x
  2. Step 2: Convert to fraction form
    74,152.90/102,331.31 = 40,161.79/x
  3. Step 3: Cross multiply
    74,152.90x = 102,331.31 × 40,161.79
  4. Step 4: Simplify right side
    74,152.90x = 4,109,808,126.01
  5. Step 5: Solve for x
    x = 4,109,808,126.01/74,152.90
  6. Step 6: Final answer
    x = 55,423.43

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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.