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Finding the Fourth Proportional to 66,448,566.70, 99,672,850.05 and 40,806,429.10

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Solution

The fourth proportional to 66,448,566.70, 99,672,850.05 and 40,806,429.10 is: 61,209,643.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,448,566.70 : 99,672,850.05 = 40,806,429.10 : x
  2. Step 2: Convert to fraction form
    66,448,566.70/99,672,850.05 = 40,806,429.10/x
  3. Step 3: Cross multiply
    66,448,566.70x = 99,672,850.05 × 40,806,429.10
  4. Step 4: Simplify right side
    66,448,566.70x = 4,067,293,088,760,256.50
  5. Step 5: Solve for x
    x = 4,067,293,088,760,256.50/66,448,566.70
  6. Step 6: Final answer
    x = 61,209,643.65

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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.