Home / 57,616.75-79,511.12-31,120.75

Finding the Fourth Proportional to 57,616.75, 79,511.12 and 31,120.75

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Solution

The fourth proportional to 57,616.75, 79,511.12 and 31,120.75 is: 42,946.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,616.75 : 79,511.12 = 31,120.75 : x
  2. Step 2: Convert to fraction form
    57,616.75/79,511.12 = 31,120.75/x
  3. Step 3: Cross multiply
    57,616.75x = 79,511.12 × 31,120.75
  4. Step 4: Simplify right side
    57,616.75x = 2,474,445,687.74
  5. Step 5: Solve for x
    x = 2,474,445,687.74/57,616.75
  6. Step 6: Final answer
    x = 42,946.64

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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.