Home / 51,551.28-71,145.76-28,894.12

Finding the Fourth Proportional to 51,551.28, 71,145.76 and 28,894.12

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Solution

The fourth proportional to 51,551.28, 71,145.76 and 28,894.12 is: 39,876.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,551.28 : 71,145.76 = 28,894.12 : x
  2. Step 2: Convert to fraction form
    51,551.28/71,145.76 = 28,894.12/x
  3. Step 3: Cross multiply
    51,551.28x = 71,145.76 × 28,894.12
  4. Step 4: Simplify right side
    51,551.28x = 2,055,694,126.93
  5. Step 5: Solve for x
    x = 2,055,694,126.93/51,551.28
  6. Step 6: Final answer
    x = 39,876.68

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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.