Home / 80,381.16-110,903.38-63,332.55

Finding the Fourth Proportional to 80,381.16, 110,903.38 and 63,332.55

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Solution

The fourth proportional to 80,381.16, 110,903.38 and 63,332.55 is: 87,381.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,381.16 : 110,903.38 = 63,332.55 : x
  2. Step 2: Convert to fraction form
    80,381.16/110,903.38 = 63,332.55/x
  3. Step 3: Cross multiply
    80,381.16x = 110,903.38 × 63,332.55
  4. Step 4: Simplify right side
    80,381.16x = 7,023,793,700.69
  5. Step 5: Solve for x
    x = 7,023,793,700.69/80,381.16
  6. Step 6: Final answer
    x = 87,381.09

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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.