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Finding the Fourth Proportional to 66,393,205.70, 99,589,808.55 and 65,968,052.90

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Solution

The fourth proportional to 66,393,205.70, 99,589,808.55 and 65,968,052.90 is: 98,952,079.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,393,205.70 : 99,589,808.55 = 65,968,052.90 : x
  2. Step 2: Convert to fraction form
    66,393,205.70/99,589,808.55 = 65,968,052.90/x
  3. Step 3: Cross multiply
    66,393,205.70x = 99,589,808.55 × 65,968,052.90
  4. Step 4: Simplify right side
    66,393,205.70x = 6,569,745,758,727,272
  5. Step 5: Solve for x
    x = 6,569,745,758,727,272/66,393,205.70
  6. Step 6: Final answer
    x = 98,952,079.35

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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.