Home / 80,475.45-120,715.71-38,360.10

Finding the Fourth Proportional to 80,475.45, 120,715.71 and 38,360.10

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Solution

The fourth proportional to 80,475.45, 120,715.71 and 38,360.10 is: 57,541.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,475.45 : 120,715.71 = 38,360.10 : x
  2. Step 2: Convert to fraction form
    80,475.45/120,715.71 = 38,360.10/x
  3. Step 3: Cross multiply
    80,475.45x = 120,715.71 × 38,360.10
  4. Step 4: Simplify right side
    80,475.45x = 4,630,667,016.00
  5. Step 5: Solve for x
    x = 4,630,667,016.00/80,475.45
  6. Step 6: Final answer
    x = 57,541.36

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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.