Home / 80,590.45-120,885.54-21,426.13

Finding the Fourth Proportional to 80,590.45, 120,885.54 and 21,426.13

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Solution

The fourth proportional to 80,590.45, 120,885.54 and 21,426.13 is: 32,139.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,590.45 : 120,885.54 = 21,426.13 : x
  2. Step 2: Convert to fraction form
    80,590.45/120,885.54 = 21,426.13/x
  3. Step 3: Cross multiply
    80,590.45x = 120,885.54 × 21,426.13
  4. Step 4: Simplify right side
    80,590.45x = 2,590,109,295.16
  5. Step 5: Solve for x
    x = 2,590,109,295.16/80,590.45
  6. Step 6: Final answer
    x = 32,139.16

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1.5x scale

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.