Home / 87,854.36-121,247.70-50,134.28

Finding the Fourth Proportional to 87,854.36, 121,247.70 and 50,134.28

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Solution

The fourth proportional to 87,854.36, 121,247.70 and 50,134.28 is: 69,190.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,854.36 : 121,247.70 = 50,134.28 : x
  2. Step 2: Convert to fraction form
    87,854.36/121,247.70 = 50,134.28/x
  3. Step 3: Cross multiply
    87,854.36x = 121,247.70 × 50,134.28
  4. Step 4: Simplify right side
    87,854.36x = 6,078,666,141.16
  5. Step 5: Solve for x
    x = 6,078,666,141.16/87,854.36
  6. Step 6: Final answer
    x = 69,190.26

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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.