Home / 87,197.12-130,828.80-45,615.68

Finding the Fourth Proportional to 87,197.12, 130,828.80 and 45,615.68

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Solution

The fourth proportional to 87,197.12, 130,828.80 and 45,615.68 is: 68,440.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,197.12 : 130,828.80 = 45,615.68 : x
  2. Step 2: Convert to fraction form
    87,197.12/130,828.80 = 45,615.68/x
  3. Step 3: Cross multiply
    87,197.12x = 130,828.80 × 45,615.68
  4. Step 4: Simplify right side
    87,197.12x = 5,967,844,675.58
  5. Step 5: Solve for x
    x = 5,967,844,675.58/87,197.12
  6. Step 6: Final answer
    x = 68,440.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.