Home / 80,911.65-121,354.46-34,158.45

Finding the Fourth Proportional to 80,911.65, 121,354.46 and 34,158.45

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Solution

The fourth proportional to 80,911.65, 121,354.46 and 34,158.45 is: 51,232.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,911.65 : 121,354.46 = 34,158.45 : x
  2. Step 2: Convert to fraction form
    80,911.65/121,354.46 = 34,158.45/x
  3. Step 3: Cross multiply
    80,911.65x = 121,354.46 × 34,158.45
  4. Step 4: Simplify right side
    80,911.65x = 4,145,279,732.81
  5. Step 5: Solve for x
    x = 4,145,279,732.81/80,911.65
  6. Step 6: Final answer
    x = 51,232.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.