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Finding the Fourth Proportional to 66,760.58, 92,139.72 and 38,080.10

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Solution

The fourth proportional to 66,760.58, 92,139.72 and 38,080.10 is: 52,556.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,760.58 : 92,139.72 = 38,080.10 : x
  2. Step 2: Convert to fraction form
    66,760.58/92,139.72 = 38,080.10/x
  3. Step 3: Cross multiply
    66,760.58x = 92,139.72 × 38,080.10
  4. Step 4: Simplify right side
    66,760.58x = 3,508,689,751.57
  5. Step 5: Solve for x
    x = 3,508,689,751.57/66,760.58
  6. Step 6: Final answer
    x = 52,556.31

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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.