Home / 87,953.12-121,375.36-47,667.20

Finding the Fourth Proportional to 87,953.12, 121,375.36 and 47,667.20

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Solution

The fourth proportional to 87,953.12, 121,375.36 and 47,667.20 is: 65,780.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,953.12 : 121,375.36 = 47,667.20 : x
  2. Step 2: Convert to fraction form
    87,953.12/121,375.36 = 47,667.20/x
  3. Step 3: Cross multiply
    87,953.12x = 121,375.36 × 47,667.20
  4. Step 4: Simplify right side
    87,953.12x = 5,785,623,560.19
  5. Step 5: Solve for x
    x = 5,785,623,560.19/87,953.12
  6. Step 6: Final answer
    x = 65,780.77

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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.