Home / 87,678.44-121,003.62-53,686.76

Finding the Fourth Proportional to 87,678.44, 121,003.62 and 53,686.76

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Solution

The fourth proportional to 87,678.44, 121,003.62 and 53,686.76 is: 74,092.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,678.44 : 121,003.62 = 53,686.76 : x
  2. Step 2: Convert to fraction form
    87,678.44/121,003.62 = 53,686.76/x
  3. Step 3: Cross multiply
    87,678.44x = 121,003.62 × 53,686.76
  4. Step 4: Simplify right side
    87,678.44x = 6,496,292,306.07
  5. Step 5: Solve for x
    x = 6,496,292,306.07/87,678.44
  6. Step 6: Final answer
    x = 74,092.24

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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.