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Finding the Fourth Proportional to 55,280.70, 82,905.84 and 15,290.10

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Solution

The fourth proportional to 55,280.70, 82,905.84 and 15,290.10 is: 22,930.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,280.70 : 82,905.84 = 15,290.10 : x
  2. Step 2: Convert to fraction form
    55,280.70/82,905.84 = 15,290.10/x
  3. Step 3: Cross multiply
    55,280.70x = 82,905.84 × 15,290.10
  4. Step 4: Simplify right side
    55,280.70x = 1,267,638,584.18
  5. Step 5: Solve for x
    x = 1,267,638,584.18/55,280.70
  6. Step 6: Final answer
    x = 22,930.94

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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.