Home / 80,416.95-120,434.75-63,723.31

Finding the Fourth Proportional to 80,416.95, 120,434.75 and 63,723.31

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Solution

The fourth proportional to 80,416.95, 120,434.75 and 63,723.31 is: 95,433.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,416.95 : 120,434.75 = 63,723.31 : x
  2. Step 2: Convert to fraction form
    80,416.95/120,434.75 = 63,723.31/x
  3. Step 3: Cross multiply
    80,416.95x = 120,434.75 × 63,723.31
  4. Step 4: Simplify right side
    80,416.95x = 7,674,500,528.28
  5. Step 5: Solve for x
    x = 7,674,500,528.28/80,416.95
  6. Step 6: Final answer
    x = 95,433.86

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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.