Home / 87,857.90-121,243.39-47,570.83

Finding the Fourth Proportional to 87,857.90, 121,243.39 and 47,570.83

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Solution

The fourth proportional to 87,857.90, 121,243.39 and 47,570.83 is: 65,647.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,857.90 : 121,243.39 = 47,570.83 : x
  2. Step 2: Convert to fraction form
    87,857.90/121,243.39 = 47,570.83/x
  3. Step 3: Cross multiply
    87,857.90x = 121,243.39 × 47,570.83
  4. Step 4: Simplify right side
    87,857.90x = 5,767,648,694.31
  5. Step 5: Solve for x
    x = 5,767,648,694.31/87,857.90
  6. Step 6: Final answer
    x = 65,647.47

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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.