Home / 57,149.32-78,865.17-31,307.66

Finding the Fourth Proportional to 57,149.32, 78,865.17 and 31,307.66

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Solution

The fourth proportional to 57,149.32, 78,865.17 and 31,307.66 is: 43,204.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,149.32 : 78,865.17 = 31,307.66 : x
  2. Step 2: Convert to fraction form
    57,149.32/78,865.17 = 31,307.66/x
  3. Step 3: Cross multiply
    57,149.32x = 78,865.17 × 31,307.66
  4. Step 4: Simplify right side
    57,149.32x = 2,469,084,047.10
  5. Step 5: Solve for x
    x = 2,469,084,047.10/57,149.32
  6. Step 6: Final answer
    x = 43,204.09

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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.