Home / 81,144.24-111,966-45,332.40

Finding the Fourth Proportional to 81,144.24, 111,966 and 45,332.40

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Solution

The fourth proportional to 81,144.24, 111,966 and 45,332.40 is: 62,551.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,144.24 : 111,966 = 45,332.40 : x
  2. Step 2: Convert to fraction form
    81,144.24/111,966 = 45,332.40/x
  3. Step 3: Cross multiply
    81,144.24x = 111,966 × 45,332.40
  4. Step 4: Simplify right side
    81,144.24x = 5,075,687,498.40
  5. Step 5: Solve for x
    x = 5,075,687,498.40/81,144.24
  6. Step 6: Final answer
    x = 62,551.42

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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.