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Finding the Fourth Proportional to 57,488.70, 86,331.45 and 31,244.70

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Solution

The fourth proportional to 57,488.70, 86,331.45 and 31,244.70 is: 46,920.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,488.70 : 86,331.45 = 31,244.70 : x
  2. Step 2: Convert to fraction form
    57,488.70/86,331.45 = 31,244.70/x
  3. Step 3: Cross multiply
    57,488.70x = 86,331.45 × 31,244.70
  4. Step 4: Simplify right side
    57,488.70x = 2,697,400,255.82
  5. Step 5: Solve for x
    x = 2,697,400,255.82/57,488.70
  6. Step 6: Final answer
    x = 46,920.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.