Home / 49,780.08-74,661.12-21,684.40

Finding the Fourth Proportional to 49,780.08, 74,661.12 and 21,684.40

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Solution

The fourth proportional to 49,780.08, 74,661.12 and 21,684.40 is: 32,522.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,780.08 : 74,661.12 = 21,684.40 : x
  2. Step 2: Convert to fraction form
    49,780.08/74,661.12 = 21,684.40/x
  3. Step 3: Cross multiply
    49,780.08x = 74,661.12 × 21,684.40
  4. Step 4: Simplify right side
    49,780.08x = 1,618,981,590.53
  5. Step 5: Solve for x
    x = 1,618,981,590.53/49,780.08
  6. Step 6: Final answer
    x = 32,522.68

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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.