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Finding the Fourth Proportional to 66,640,348.89, 99,973,036.62 and 30,251,293.29

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Solution

The fourth proportional to 66,640,348.89, 99,973,036.62 and 30,251,293.29 is: 45,382,620.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,640,348.89 : 99,973,036.62 = 30,251,293.29 : x
  2. Step 2: Convert to fraction form
    66,640,348.89/99,973,036.62 = 30,251,293.29/x
  3. Step 3: Cross multiply
    66,640,348.89x = 99,973,036.62 × 30,251,293.29
  4. Step 4: Simplify right side
    66,640,348.89x = 3,024,313,651,883,530.50
  5. Step 5: Solve for x
    x = 3,024,313,651,883,530.50/66,640,348.89
  6. Step 6: Final answer
    x = 45,382,620.32

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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.