Home / 87,420.70-131,131.05-28,298.80

Finding the Fourth Proportional to 87,420.70, 131,131.05 and 28,298.80

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Solution

The fourth proportional to 87,420.70, 131,131.05 and 28,298.80 is: 42,448.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,420.70 : 131,131.05 = 28,298.80 : x
  2. Step 2: Convert to fraction form
    87,420.70/131,131.05 = 28,298.80/x
  3. Step 3: Cross multiply
    87,420.70x = 131,131.05 × 28,298.80
  4. Step 4: Simplify right side
    87,420.70x = 3,710,851,357.74
  5. Step 5: Solve for x
    x = 3,710,851,357.74/87,420.70
  6. Step 6: Final answer
    x = 42,448.20

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1.5x scale

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.