Home / 80,896.07-121,398.78-28,306.01

Finding the Fourth Proportional to 80,896.07, 121,398.78 and 28,306.01

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Solution

The fourth proportional to 80,896.07, 121,398.78 and 28,306.01 is: 42,478.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,896.07 : 121,398.78 = 28,306.01 : x
  2. Step 2: Convert to fraction form
    80,896.07/121,398.78 = 28,306.01/x
  3. Step 3: Cross multiply
    80,896.07x = 121,398.78 × 28,306.01
  4. Step 4: Simplify right side
    80,896.07x = 3,436,314,473.67
  5. Step 5: Solve for x
    x = 3,436,314,473.67/80,896.07
  6. Step 6: Final answer
    x = 42,478.14

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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.