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Finding the Fourth Proportional to 89,560.80, 134,290.80 and 39,582.72

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Solution

The fourth proportional to 89,560.80, 134,290.80 and 39,582.72 is: 59,351.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,560.80 : 134,290.80 = 39,582.72 : x
  2. Step 2: Convert to fraction form
    89,560.80/134,290.80 = 39,582.72/x
  3. Step 3: Cross multiply
    89,560.80x = 134,290.80 × 39,582.72
  4. Step 4: Simplify right side
    89,560.80x = 5,315,595,134.98
  5. Step 5: Solve for x
    x = 5,315,595,134.98/89,560.80
  6. Step 6: Final answer
    x = 59,351.80

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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.