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Finding the Fourth Proportional to 66,541.87, 99,775.55 and 22,144.40

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Solution

The fourth proportional to 66,541.87, 99,775.55 and 22,144.40 is: 33,204.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,541.87 : 99,775.55 = 22,144.40 : x
  2. Step 2: Convert to fraction form
    66,541.87/99,775.55 = 22,144.40/x
  3. Step 3: Cross multiply
    66,541.87x = 99,775.55 × 22,144.40
  4. Step 4: Simplify right side
    66,541.87x = 2,209,470,056.74
  5. Step 5: Solve for x
    x = 2,209,470,056.74/66,541.87
  6. Step 6: Final answer
    x = 33,204.21

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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.