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Finding the Fourth Proportional to 88,525.60, 133,047.60 and 77,120.80

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Solution

The fourth proportional to 88,525.60, 133,047.60 and 77,120.80 is: 115,907.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,525.60 : 133,047.60 = 77,120.80 : x
  2. Step 2: Convert to fraction form
    88,525.60/133,047.60 = 77,120.80/x
  3. Step 3: Cross multiply
    88,525.60x = 133,047.60 × 77,120.80
  4. Step 4: Simplify right side
    88,525.60x = 10,260,737,350.08
  5. Step 5: Solve for x
    x = 10,260,737,350.08/88,525.60
  6. Step 6: Final answer
    x = 115,907.01

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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.