Home / 57,120.43-78,827.17-31,281.25

Finding the Fourth Proportional to 57,120.43, 78,827.17 and 31,281.25

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Solution

The fourth proportional to 57,120.43, 78,827.17 and 31,281.25 is: 43,168.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,120.43 : 78,827.17 = 31,281.25 : x
  2. Step 2: Convert to fraction form
    57,120.43/78,827.17 = 31,281.25/x
  3. Step 3: Cross multiply
    57,120.43x = 78,827.17 × 31,281.25
  4. Step 4: Simplify right side
    57,120.43x = 2,465,812,058.09
  5. Step 5: Solve for x
    x = 2,465,812,058.09/57,120.43
  6. Step 6: Final answer
    x = 43,168.66

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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.