Home / 80,475.12-120,718.08-21,310.02

Finding the Fourth Proportional to 80,475.12, 120,718.08 and 21,310.02

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Solution

The fourth proportional to 80,475.12, 120,718.08 and 21,310.02 is: 31,966.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,475.12 : 120,718.08 = 21,310.02 : x
  2. Step 2: Convert to fraction form
    80,475.12/120,718.08 = 21,310.02/x
  3. Step 3: Cross multiply
    80,475.12x = 120,718.08 × 21,310.02
  4. Step 4: Simplify right side
    80,475.12x = 2,572,504,699.16
  5. Step 5: Solve for x
    x = 2,572,504,699.16/80,475.12
  6. Step 6: Final answer
    x = 31,966.46

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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.