Home / 87,405.02-120,618.67-49,686.54

Finding the Fourth Proportional to 87,405.02, 120,618.67 and 49,686.54

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Solution

The fourth proportional to 87,405.02, 120,618.67 and 49,686.54 is: 68,567.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,405.02 : 120,618.67 = 49,686.54 : x
  2. Step 2: Convert to fraction form
    87,405.02/120,618.67 = 49,686.54/x
  3. Step 3: Cross multiply
    87,405.02x = 120,618.67 × 49,686.54
  4. Step 4: Simplify right side
    87,405.02x = 5,993,124,371.70
  5. Step 5: Solve for x
    x = 5,993,124,371.70/87,405.02
  6. Step 6: Final answer
    x = 68,567.28

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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.