Home / 87,313.74-130,886.19-28,109.22

Finding the Fourth Proportional to 87,313.74, 130,886.19 and 28,109.22

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Solution

The fourth proportional to 87,313.74, 130,886.19 and 28,109.22 is: 42,136.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,313.74 : 130,886.19 = 28,109.22 : x
  2. Step 2: Convert to fraction form
    87,313.74/130,886.19 = 28,109.22/x
  3. Step 3: Cross multiply
    87,313.74x = 130,886.19 × 28,109.22
  4. Step 4: Simplify right side
    87,313.74x = 3,679,108,709.67
  5. Step 5: Solve for x
    x = 3,679,108,709.67/87,313.74
  6. Step 6: Final answer
    x = 42,136.65

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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.