Home / 66,440,431.20-99,674,643.60-28,082,200.80

Finding the Fourth Proportional to 66,440,431.20, 99,674,643.60 and 28,082,200.80

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Solution

The fourth proportional to 66,440,431.20, 99,674,643.60 and 28,082,200.80 is: 42,129,217.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,440,431.20 : 99,674,643.60 = 28,082,200.80 : x
  2. Step 2: Convert to fraction form
    66,440,431.20/99,674,643.60 = 28,082,200.80/x
  3. Step 3: Cross multiply
    66,440,431.20x = 99,674,643.60 × 28,082,200.80
  4. Step 4: Simplify right side
    66,440,431.20x = 2,799,083,356,243,635
  5. Step 5: Solve for x
    x = 2,799,083,356,243,635/66,440,431.20
  6. Step 6: Final answer
    x = 42,129,217.19

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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.