Home / 57,142.25-78,853.66-31,646.89

Finding the Fourth Proportional to 57,142.25, 78,853.66 and 31,646.89

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Solution

The fourth proportional to 57,142.25, 78,853.66 and 31,646.89 is: 43,671.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,142.25 : 78,853.66 = 31,646.89 : x
  2. Step 2: Convert to fraction form
    57,142.25/78,853.66 = 31,646.89/x
  3. Step 3: Cross multiply
    57,142.25x = 78,853.66 × 31,646.89
  4. Step 4: Simplify right side
    57,142.25x = 2,495,473,104.12
  5. Step 5: Solve for x
    x = 2,495,473,104.12/57,142.25
  6. Step 6: Final answer
    x = 43,671.24

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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.