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Finding the Fourth Proportional to 66,305.70, 99,531.45 and 36,708.30

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Solution

The fourth proportional to 66,305.70, 99,531.45 and 36,708.30 is: 55,102.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,305.70 : 99,531.45 = 36,708.30 : x
  2. Step 2: Convert to fraction form
    66,305.70/99,531.45 = 36,708.30/x
  3. Step 3: Cross multiply
    66,305.70x = 99,531.45 × 36,708.30
  4. Step 4: Simplify right side
    66,305.70x = 3,653,630,326.04
  5. Step 5: Solve for x
    x = 3,653,630,326.04/66,305.70
  6. Step 6: Final answer
    x = 55,102.81

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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.