Home / 66,443,999.40-99,665,999.10-40,801,861.80

Finding the Fourth Proportional to 66,443,999.40, 99,665,999.10 and 40,801,861.80

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Solution

The fourth proportional to 66,443,999.40, 99,665,999.10 and 40,801,861.80 is: 61,202,792.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,443,999.40 : 99,665,999.10 = 40,801,861.80 : x
  2. Step 2: Convert to fraction form
    66,443,999.40/99,665,999.10 = 40,801,861.80/x
  3. Step 3: Cross multiply
    66,443,999.40x = 99,665,999.10 × 40,801,861.80
  4. Step 4: Simplify right side
    66,443,999.40x = 4,066,558,321,437,124
  5. Step 5: Solve for x
    x = 4,066,558,321,437,124/66,443,999.40
  6. Step 6: Final answer
    x = 61,202,792.70

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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.