Home / 87,345.61-120,537.35-49,621.93

Finding the Fourth Proportional to 87,345.61, 120,537.35 and 49,621.93

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Solution

The fourth proportional to 87,345.61, 120,537.35 and 49,621.93 is: 68,478.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,345.61 : 120,537.35 = 49,621.93 : x
  2. Step 2: Convert to fraction form
    87,345.61/120,537.35 = 49,621.93/x
  3. Step 3: Cross multiply
    87,345.61x = 120,537.35 × 49,621.93
  4. Step 4: Simplify right side
    87,345.61x = 5,981,295,695.98
  5. Step 5: Solve for x
    x = 5,981,295,695.98/87,345.61
  6. Step 6: Final answer
    x = 68,478.49

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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.