Home / 87,218.09-130,744.07-28,012.23

Finding the Fourth Proportional to 87,218.09, 130,744.07 and 28,012.23

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Solution

The fourth proportional to 87,218.09, 130,744.07 and 28,012.23 is: 41,991.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,218.09 : 130,744.07 = 28,012.23 : x
  2. Step 2: Convert to fraction form
    87,218.09/130,744.07 = 28,012.23/x
  3. Step 3: Cross multiply
    87,218.09x = 130,744.07 × 28,012.23
  4. Step 4: Simplify right side
    87,218.09x = 3,662,432,819.91
  5. Step 5: Solve for x
    x = 3,662,432,819.91/87,218.09
  6. Step 6: Final answer
    x = 41,991.67

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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.