Home / 83,775.12-125,649.72-54,401.28

Finding the Fourth Proportional to 83,775.12, 125,649.72 and 54,401.28

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Solution

The fourth proportional to 83,775.12, 125,649.72 and 54,401.28 is: 81,593.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,775.12 : 125,649.72 = 54,401.28 : x
  2. Step 2: Convert to fraction form
    83,775.12/125,649.72 = 54,401.28/x
  3. Step 3: Cross multiply
    83,775.12x = 125,649.72 × 54,401.28
  4. Step 4: Simplify right side
    83,775.12x = 6,835,505,599.64
  5. Step 5: Solve for x
    x = 6,835,505,599.64/83,775.12
  6. Step 6: Final answer
    x = 81,593.50

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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.