Home / 81,521.43-122,176.87-36,509.89

Finding the Fourth Proportional to 81,521.43, 122,176.87 and 36,509.89

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Solution

The fourth proportional to 81,521.43, 122,176.87 and 36,509.89 is: 54,717.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,521.43 : 122,176.87 = 36,509.89 : x
  2. Step 2: Convert to fraction form
    81,521.43/122,176.87 = 36,509.89/x
  3. Step 3: Cross multiply
    81,521.43x = 122,176.87 × 36,509.89
  4. Step 4: Simplify right side
    81,521.43x = 4,460,664,084.24
  5. Step 5: Solve for x
    x = 4,460,664,084.24/81,521.43
  6. Step 6: Final answer
    x = 54,717.69

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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.