Home / 87,918.78-121,327.56-47,632.47

Finding the Fourth Proportional to 87,918.78, 121,327.56 and 47,632.47

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Solution

The fourth proportional to 87,918.78, 121,327.56 and 47,632.47 is: 65,732.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,918.78 : 121,327.56 = 47,632.47 : x
  2. Step 2: Convert to fraction form
    87,918.78/121,327.56 = 47,632.47/x
  3. Step 3: Cross multiply
    87,918.78x = 121,327.56 × 47,632.47
  4. Step 4: Simplify right side
    87,918.78x = 5,779,131,361.87
  5. Step 5: Solve for x
    x = 5,779,131,361.87/87,918.78
  6. Step 6: Final answer
    x = 65,732.62

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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.