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Finding the Fourth Proportional to 66,267,903.20, 99,342,757.20 and 25,868,991.20

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Solution

The fourth proportional to 66,267,903.20, 99,342,757.20 and 25,868,991.20 is: 38,780,416.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,267,903.20 : 99,342,757.20 = 25,868,991.20 : x
  2. Step 2: Convert to fraction form
    66,267,903.20/99,342,757.20 = 25,868,991.20/x
  3. Step 3: Cross multiply
    66,267,903.20x = 99,342,757.20 × 25,868,991.20
  4. Step 4: Simplify right side
    66,267,903.20x = 2,569,896,911,790,536.50
  5. Step 5: Solve for x
    x = 2,569,896,911,790,536.50/66,267,903.20
  6. Step 6: Final answer
    x = 38,780,416.88

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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.