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Finding the Fourth Proportional to 66,416,083.80, 99,624,125.70 and 43,722,605.40

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Solution

The fourth proportional to 66,416,083.80, 99,624,125.70 and 43,722,605.40 is: 65,583,908.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,416,083.80 : 99,624,125.70 = 43,722,605.40 : x
  2. Step 2: Convert to fraction form
    66,416,083.80/99,624,125.70 = 43,722,605.40/x
  3. Step 3: Cross multiply
    66,416,083.80x = 99,624,125.70 × 43,722,605.40
  4. Step 4: Simplify right side
    66,416,083.80x = 4,355,826,336,301,099
  5. Step 5: Solve for x
    x = 4,355,826,336,301,099/66,416,083.80
  6. Step 6: Final answer
    x = 65,583,908.10

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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.