Home / 87,315.78-120,400.38-58,972.26

Finding the Fourth Proportional to 87,315.78, 120,400.38 and 58,972.26

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Solution

The fourth proportional to 87,315.78, 120,400.38 and 58,972.26 is: 81,317.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,315.78 : 120,400.38 = 58,972.26 : x
  2. Step 2: Convert to fraction form
    87,315.78/120,400.38 = 58,972.26/x
  3. Step 3: Cross multiply
    87,315.78x = 120,400.38 × 58,972.26
  4. Step 4: Simplify right side
    87,315.78x = 7,100,282,513.46
  5. Step 5: Solve for x
    x = 7,100,282,513.46/87,315.78
  6. Step 6: Final answer
    x = 81,317.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.