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Finding the Fourth Proportional to 66,535.60, 99,657.60 and 57,787.60

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Solution

The fourth proportional to 66,535.60, 99,657.60 and 57,787.60 is: 86,554.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,535.60 : 99,657.60 = 57,787.60 : x
  2. Step 2: Convert to fraction form
    66,535.60/99,657.60 = 57,787.60/x
  3. Step 3: Cross multiply
    66,535.60x = 99,657.60 × 57,787.60
  4. Step 4: Simplify right side
    66,535.60x = 5,758,973,525.76
  5. Step 5: Solve for x
    x = 5,758,973,525.76/66,535.60
  6. Step 6: Final answer
    x = 86,554.77

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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.