Home / 40,717.60-56,217.36-31,269.28

Finding the Fourth Proportional to 40,717.60, 56,217.36 and 31,269.28

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Solution

The fourth proportional to 40,717.60, 56,217.36 and 31,269.28 is: 43,172.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,717.60 : 56,217.36 = 31,269.28 : x
  2. Step 2: Convert to fraction form
    40,717.60/56,217.36 = 31,269.28/x
  3. Step 3: Cross multiply
    40,717.60x = 56,217.36 × 31,269.28
  4. Step 4: Simplify right side
    40,717.60x = 1,757,876,370.70
  5. Step 5: Solve for x
    x = 1,757,876,370.70/40,717.60
  6. Step 6: Final answer
    x = 43,172.40

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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.