Home / 52,087.77-71,913.15-40,128.12

Finding the Fourth Proportional to 52,087.77, 71,913.15 and 40,128.12

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Solution

The fourth proportional to 52,087.77, 71,913.15 and 40,128.12 is: 55,401.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,087.77 : 71,913.15 = 40,128.12 : x
  2. Step 2: Convert to fraction form
    52,087.77/71,913.15 = 40,128.12/x
  3. Step 3: Cross multiply
    52,087.77x = 71,913.15 × 40,128.12
  4. Step 4: Simplify right side
    52,087.77x = 2,885,739,512.78
  5. Step 5: Solve for x
    x = 2,885,739,512.78/52,087.77
  6. Step 6: Final answer
    x = 55,401.48

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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.