Home / 81,140.68-111,970.12-45,323.56

Finding the Fourth Proportional to 81,140.68, 111,970.12 and 45,323.56

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Solution

The fourth proportional to 81,140.68, 111,970.12 and 45,323.56 is: 62,544.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,140.68 : 111,970.12 = 45,323.56 : x
  2. Step 2: Convert to fraction form
    81,140.68/111,970.12 = 45,323.56/x
  3. Step 3: Cross multiply
    81,140.68x = 111,970.12 × 45,323.56
  4. Step 4: Simplify right side
    81,140.68x = 5,074,884,452.03
  5. Step 5: Solve for x
    x = 5,074,884,452.03/81,140.68
  6. Step 6: Final answer
    x = 62,544.27

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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.