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Finding the Fourth Proportional to 66,700.80, 100,066.12 and 35,125.72

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Solution

The fourth proportional to 66,700.80, 100,066.12 and 35,125.72 is: 52,696.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,700.80 : 100,066.12 = 35,125.72 : x
  2. Step 2: Convert to fraction form
    66,700.80/100,066.12 = 35,125.72/x
  3. Step 3: Cross multiply
    66,700.80x = 100,066.12 × 35,125.72
  4. Step 4: Simplify right side
    66,700.80x = 3,514,894,174.63
  5. Step 5: Solve for x
    x = 3,514,894,174.63/66,700.80
  6. Step 6: Final answer
    x = 52,696.43

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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.