Home / 81,492,515.10-122,238,772.65-20,908,241.10

Finding the Fourth Proportional to 81,492,515.10, 122,238,772.65 and 20,908,241.10

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Solution

The fourth proportional to 81,492,515.10, 122,238,772.65 and 20,908,241.10 is: 31,362,361.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,492,515.10 : 122,238,772.65 = 20,908,241.10 : x
  2. Step 2: Convert to fraction form
    81,492,515.10/122,238,772.65 = 20,908,241.10/x
  3. Step 3: Cross multiply
    81,492,515.10x = 122,238,772.65 × 20,908,241.10
  4. Step 4: Simplify right side
    81,492,515.10x = 2,555,797,730,334,286
  5. Step 5: Solve for x
    x = 2,555,797,730,334,286/81,492,515.10
  6. Step 6: Final answer
    x = 31,362,361.65

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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.