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Finding the Fourth Proportional to 66,741.20, 100,111.80 and 63,679.40

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Solution

The fourth proportional to 66,741.20, 100,111.80 and 63,679.40 is: 95,519.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,741.20 : 100,111.80 = 63,679.40 : x
  2. Step 2: Convert to fraction form
    66,741.20/100,111.80 = 63,679.40/x
  3. Step 3: Cross multiply
    66,741.20x = 100,111.80 × 63,679.40
  4. Step 4: Simplify right side
    66,741.20x = 6,375,059,356.92
  5. Step 5: Solve for x
    x = 6,375,059,356.92/66,741.20
  6. Step 6: Final answer
    x = 95,519.10

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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.