Home / 87,722.47-121,057.10-47,436.25

Finding the Fourth Proportional to 87,722.47, 121,057.10 and 47,436.25

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Solution

The fourth proportional to 87,722.47, 121,057.10 and 47,436.25 is: 65,462.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,722.47 : 121,057.10 = 47,436.25 : x
  2. Step 2: Convert to fraction form
    87,722.47/121,057.10 = 47,436.25/x
  3. Step 3: Cross multiply
    87,722.47x = 121,057.10 × 47,436.25
  4. Step 4: Simplify right side
    87,722.47x = 5,742,494,859.88
  5. Step 5: Solve for x
    x = 5,742,494,859.88/87,722.47
  6. Step 6: Final answer
    x = 65,462.07

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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.