Home / 81,119.10-111,943.17-45,309.63

Finding the Fourth Proportional to 81,119.10, 111,943.17 and 45,309.63

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Solution

The fourth proportional to 81,119.10, 111,943.17 and 45,309.63 is: 62,526.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,119.10 : 111,943.17 = 45,309.63 : x
  2. Step 2: Convert to fraction form
    81,119.10/111,943.17 = 45,309.63/x
  3. Step 3: Cross multiply
    81,119.10x = 111,943.17 × 45,309.63
  4. Step 4: Simplify right side
    81,119.10x = 5,072,103,613.73
  5. Step 5: Solve for x
    x = 5,072,103,613.73/81,119.10
  6. Step 6: Final answer
    x = 62,526.63

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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.