Home / 80,921.28-111,675.36-45,114.24

Finding the Fourth Proportional to 80,921.28, 111,675.36 and 45,114.24

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Solution

The fourth proportional to 80,921.28, 111,675.36 and 45,114.24 is: 62,259.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,921.28 : 111,675.36 = 45,114.24 : x
  2. Step 2: Convert to fraction form
    80,921.28/111,675.36 = 45,114.24/x
  3. Step 3: Cross multiply
    80,921.28x = 111,675.36 × 45,114.24
  4. Step 4: Simplify right side
    80,921.28x = 5,038,148,993.13
  5. Step 5: Solve for x
    x = 5,038,148,993.13/80,921.28
  6. Step 6: Final answer
    x = 62,259.88

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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.