Home / 57,144.36-78,857.48-31,649.72

Finding the Fourth Proportional to 57,144.36, 78,857.48 and 31,649.72

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Solution

The fourth proportional to 57,144.36, 78,857.48 and 31,649.72 is: 43,675.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,144.36 : 78,857.48 = 31,649.72 : x
  2. Step 2: Convert to fraction form
    57,144.36/78,857.48 = 31,649.72/x
  3. Step 3: Cross multiply
    57,144.36x = 78,857.48 × 31,649.72
  4. Step 4: Simplify right side
    57,144.36x = 2,495,817,161.91
  5. Step 5: Solve for x
    x = 2,495,817,161.91/57,144.36
  6. Step 6: Final answer
    x = 43,675.65

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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.