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Finding the Fourth Proportional to 66,522.80, 99,784.20 and 51,651.20

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Solution

The fourth proportional to 66,522.80, 99,784.20 and 51,651.20 is: 77,476.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,522.80 : 99,784.20 = 51,651.20 : x
  2. Step 2: Convert to fraction form
    66,522.80/99,784.20 = 51,651.20/x
  3. Step 3: Cross multiply
    66,522.80x = 99,784.20 × 51,651.20
  4. Step 4: Simplify right side
    66,522.80x = 5,153,973,671.04
  5. Step 5: Solve for x
    x = 5,153,973,671.04/66,522.80
  6. Step 6: Final answer
    x = 77,476.80

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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.