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Finding the Fourth Proportional to 88,942.40, 133,089.60 and 55,678.40

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Solution

The fourth proportional to 88,942.40, 133,089.60 and 55,678.40 is: 83,314.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,942.40 : 133,089.60 = 55,678.40 : x
  2. Step 2: Convert to fraction form
    88,942.40/133,089.60 = 55,678.40/x
  3. Step 3: Cross multiply
    88,942.40x = 133,089.60 × 55,678.40
  4. Step 4: Simplify right side
    88,942.40x = 7,410,215,984.64
  5. Step 5: Solve for x
    x = 7,410,215,984.64/88,942.40
  6. Step 6: Final answer
    x = 83,314.77

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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.