Home / 75,401.10-103,995.85-51,220.71

Finding the Fourth Proportional to 75,401.10, 103,995.85 and 51,220.71

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Solution

The fourth proportional to 75,401.10, 103,995.85 and 51,220.71 is: 70,645.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,401.10 : 103,995.85 = 51,220.71 : x
  2. Step 2: Convert to fraction form
    75,401.10/103,995.85 = 51,220.71/x
  3. Step 3: Cross multiply
    75,401.10x = 103,995.85 × 51,220.71
  4. Step 4: Simplify right side
    75,401.10x = 5,326,741,274.05
  5. Step 5: Solve for x
    x = 5,326,741,274.05/75,401.10
  6. Step 6: Final answer
    x = 70,645.41

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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.