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Finding the Fourth Proportional to 66,640,352.92, 99,973,042.62 and 30,251,297.32

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Solution

The fourth proportional to 66,640,352.92, 99,973,042.62 and 30,251,297.32 is: 45,382,626.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,640,352.92 : 99,973,042.62 = 30,251,297.32 : x
  2. Step 2: Convert to fraction form
    66,640,352.92/99,973,042.62 = 30,251,297.32/x
  3. Step 3: Cross multiply
    66,640,352.92x = 99,973,042.62 × 30,251,297.32
  4. Step 4: Simplify right side
    66,640,352.92x = 3,024,314,236,282,652
  5. Step 5: Solve for x
    x = 3,024,314,236,282,652/66,640,352.92
  6. Step 6: Final answer
    x = 45,382,626.35

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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.