Home / 80,938.89-111,687.53-45,125.55

Finding the Fourth Proportional to 80,938.89, 111,687.53 and 45,125.55

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Solution

The fourth proportional to 80,938.89, 111,687.53 and 45,125.55 is: 62,268.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,938.89 : 111,687.53 = 45,125.55 : x
  2. Step 2: Convert to fraction form
    80,938.89/111,687.53 = 45,125.55/x
  3. Step 3: Cross multiply
    80,938.89x = 111,687.53 × 45,125.55
  4. Step 4: Simplify right side
    80,938.89x = 5,039,960,993.76
  5. Step 5: Solve for x
    x = 5,039,960,993.76/80,938.89
  6. Step 6: Final answer
    x = 62,268.72

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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.