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Finding the Fourth Proportional to 66,529.60, 99,794.40 and 19,776.40

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Solution

The fourth proportional to 66,529.60, 99,794.40 and 19,776.40 is: 29,664.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,529.60 : 99,794.40 = 19,776.40 : x
  2. Step 2: Convert to fraction form
    66,529.60/99,794.40 = 19,776.40/x
  3. Step 3: Cross multiply
    66,529.60x = 99,794.40 × 19,776.40
  4. Step 4: Simplify right side
    66,529.60x = 1,973,573,972.16
  5. Step 5: Solve for x
    x = 1,973,573,972.16/66,529.60
  6. Step 6: Final answer
    x = 29,664.60

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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.