Home / 81,306.16-121,959.24-53,597.68

Finding the Fourth Proportional to 81,306.16, 121,959.24 and 53,597.68

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Solution

The fourth proportional to 81,306.16, 121,959.24 and 53,597.68 is: 80,396.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,306.16 : 121,959.24 = 53,597.68 : x
  2. Step 2: Convert to fraction form
    81,306.16/121,959.24 = 53,597.68/x
  3. Step 3: Cross multiply
    81,306.16x = 121,959.24 × 53,597.68
  4. Step 4: Simplify right side
    81,306.16x = 6,536,732,318.56
  5. Step 5: Solve for x
    x = 6,536,732,318.56/81,306.16
  6. Step 6: Final answer
    x = 80,396.52

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1.5x scale

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.