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Finding the Fourth Proportional to 89,052.80, 133,384.80 and 69,175.40

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Solution

The fourth proportional to 89,052.80, 133,384.80 and 69,175.40 is: 103,612.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,052.80 : 133,384.80 = 69,175.40 : x
  2. Step 2: Convert to fraction form
    89,052.80/133,384.80 = 69,175.40/x
  3. Step 3: Cross multiply
    89,052.80x = 133,384.80 × 69,175.40
  4. Step 4: Simplify right side
    89,052.80x = 9,226,946,893.92
  5. Step 5: Solve for x
    x = 9,226,946,893.92/89,052.80
  6. Step 6: Final answer
    x = 103,612.09

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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.