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Finding the Fourth Proportional to 66,419.64, 99,630.83 and 26,949.76

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Solution

The fourth proportional to 66,419.64, 99,630.83 and 26,949.76 is: 40,425.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,419.64 : 99,630.83 = 26,949.76 : x
  2. Step 2: Convert to fraction form
    66,419.64/99,630.83 = 26,949.76/x
  3. Step 3: Cross multiply
    66,419.64x = 99,630.83 × 26,949.76
  4. Step 4: Simplify right side
    66,419.64x = 2,685,026,573.27
  5. Step 5: Solve for x
    x = 2,685,026,573.27/66,419.64
  6. Step 6: Final answer
    x = 40,425.19

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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.