Home / 87,875.20-121,266.21-47,588.64

Finding the Fourth Proportional to 87,875.20, 121,266.21 and 47,588.64

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Solution

The fourth proportional to 87,875.20, 121,266.21 and 47,588.64 is: 65,671.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,875.20 : 121,266.21 = 47,588.64 : x
  2. Step 2: Convert to fraction form
    87,875.20/121,266.21 = 47,588.64/x
  3. Step 3: Cross multiply
    87,875.20x = 121,266.21 × 47,588.64
  4. Step 4: Simplify right side
    87,875.20x = 5,770,894,011.85
  5. Step 5: Solve for x
    x = 5,770,894,011.85/87,875.20
  6. Step 6: Final answer
    x = 65,671.48

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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.