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Finding the Fourth Proportional to 89,689.48, 134,441.90 and 39,793.07

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Solution

The fourth proportional to 89,689.48, 134,441.90 and 39,793.07 is: 59,648.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,689.48 : 134,441.90 = 39,793.07 : x
  2. Step 2: Convert to fraction form
    89,689.48/134,441.90 = 39,793.07/x
  3. Step 3: Cross multiply
    89,689.48x = 134,441.90 × 39,793.07
  4. Step 4: Simplify right side
    89,689.48x = 5,349,855,738.67
  5. Step 5: Solve for x
    x = 5,349,855,738.67/89,689.48
  6. Step 6: Final answer
    x = 59,648.65

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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.