Home / 87,315.40-130,800.30-52,150.60

Finding the Fourth Proportional to 87,315.40, 130,800.30 and 52,150.60

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Solution

The fourth proportional to 87,315.40, 130,800.30 and 52,150.60 is: 78,122.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,315.40 : 130,800.30 = 52,150.60 : x
  2. Step 2: Convert to fraction form
    87,315.40/130,800.30 = 52,150.60/x
  3. Step 3: Cross multiply
    87,315.40x = 130,800.30 × 52,150.60
  4. Step 4: Simplify right side
    87,315.40x = 6,821,314,125.18
  5. Step 5: Solve for x
    x = 6,821,314,125.18/87,315.40
  6. Step 6: Final answer
    x = 78,122.69

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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.