Home / 81,211.43-112,074.10-45,401.54

Finding the Fourth Proportional to 81,211.43, 112,074.10 and 45,401.54

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Solution

The fourth proportional to 81,211.43, 112,074.10 and 45,401.54 is: 62,655.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,211.43 : 112,074.10 = 45,401.54 : x
  2. Step 2: Convert to fraction form
    81,211.43/112,074.10 = 45,401.54/x
  3. Step 3: Cross multiply
    81,211.43x = 112,074.10 × 45,401.54
  4. Step 4: Simplify right side
    81,211.43x = 5,088,336,060.24
  5. Step 5: Solve for x
    x = 5,088,336,060.24/81,211.43
  6. Step 6: Final answer
    x = 62,655.42

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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.