Home / 87,782.54-121,140.33-49,543.70

Finding the Fourth Proportional to 87,782.54, 121,140.33 and 49,543.70

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Solution

The fourth proportional to 87,782.54, 121,140.33 and 49,543.70 is: 68,370.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,782.54 : 121,140.33 = 49,543.70 : x
  2. Step 2: Convert to fraction form
    87,782.54/121,140.33 = 49,543.70/x
  3. Step 3: Cross multiply
    87,782.54x = 121,140.33 × 49,543.70
  4. Step 4: Simplify right side
    87,782.54x = 6,001,739,561.72
  5. Step 5: Solve for x
    x = 6,001,739,561.72/87,782.54
  6. Step 6: Final answer
    x = 68,370.54

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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.