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Finding the Fourth Proportional to 66,317,612.80, 99,476,419.20 and 18,448,556.80

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Solution

The fourth proportional to 66,317,612.80, 99,476,419.20 and 18,448,556.80 is: 27,672,835.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,317,612.80 : 99,476,419.20 = 18,448,556.80 : x
  2. Step 2: Convert to fraction form
    66,317,612.80/99,476,419.20 = 18,448,556.80/x
  3. Step 3: Cross multiply
    66,317,612.80x = 99,476,419.20 × 18,448,556.80
  4. Step 4: Simplify right side
    66,317,612.80x = 1,835,196,369,871,810.75
  5. Step 5: Solve for x
    x = 1,835,196,369,871,810.75/66,317,612.80
  6. Step 6: Final answer
    x = 27,672,835.20

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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.