Home / 66,734.10-100,101.15-45,738.90

Finding the Fourth Proportional to 66,734.10, 100,101.15 and 45,738.90

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Solution

The fourth proportional to 66,734.10, 100,101.15 and 45,738.90 is: 68,608.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,734.10 : 100,101.15 = 45,738.90 : x
  2. Step 2: Convert to fraction form
    66,734.10/100,101.15 = 45,738.90/x
  3. Step 3: Cross multiply
    66,734.10x = 100,101.15 × 45,738.90
  4. Step 4: Simplify right side
    66,734.10x = 4,578,516,489.74
  5. Step 5: Solve for x
    x = 4,578,516,489.74/66,734.10
  6. Step 6: Final answer
    x = 68,608.35

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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.