Home / 87,865.36-121,254.01-47,579.23

Finding the Fourth Proportional to 87,865.36, 121,254.01 and 47,579.23

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Solution

The fourth proportional to 87,865.36, 121,254.01 and 47,579.23 is: 65,659.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,865.36 : 121,254.01 = 47,579.23 : x
  2. Step 2: Convert to fraction form
    87,865.36/121,254.01 = 47,579.23/x
  3. Step 3: Cross multiply
    87,865.36x = 121,254.01 × 47,579.23
  4. Step 4: Simplify right side
    87,865.36x = 5,769,172,462.83
  5. Step 5: Solve for x
    x = 5,769,172,462.83/87,865.36
  6. Step 6: Final answer
    x = 65,659.24

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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.