Home / 66,428,144.70-99,642,217.05-40,786,007.10

Finding the Fourth Proportional to 66,428,144.70, 99,642,217.05 and 40,786,007.10

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Solution

The fourth proportional to 66,428,144.70, 99,642,217.05 and 40,786,007.10 is: 61,179,010.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,428,144.70 : 99,642,217.05 = 40,786,007.10 : x
  2. Step 2: Convert to fraction form
    66,428,144.70/99,642,217.05 = 40,786,007.10/x
  3. Step 3: Cross multiply
    66,428,144.70x = 99,642,217.05 × 40,786,007.10
  4. Step 4: Simplify right side
    66,428,144.70x = 4,064,008,172,061,041
  5. Step 5: Solve for x
    x = 4,064,008,172,061,041/66,428,144.70
  6. Step 6: Final answer
    x = 61,179,010.65

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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.