Home / 81,141.68-111,971.50-45,324.56

Finding the Fourth Proportional to 81,141.68, 111,971.50 and 45,324.56

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Solution

The fourth proportional to 81,141.68, 111,971.50 and 45,324.56 is: 62,545.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,141.68 : 111,971.50 = 45,324.56 : x
  2. Step 2: Convert to fraction form
    81,141.68/111,971.50 = 45,324.56/x
  3. Step 3: Cross multiply
    81,141.68x = 111,971.50 × 45,324.56
  4. Step 4: Simplify right side
    81,141.68x = 5,075,058,970.04
  5. Step 5: Solve for x
    x = 5,075,058,970.04/81,141.68
  6. Step 6: Final answer
    x = 62,545.65

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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.