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Finding the Fourth Proportional to 74,653, 111,981.68 and 19,249

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Solution

The fourth proportional to 74,653, 111,981.68 and 19,249 is: 28,874.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,653 : 111,981.68 = 19,249 : x
  2. Step 2: Convert to fraction form
    74,653/111,981.68 = 19,249/x
  3. Step 3: Cross multiply
    74,653x = 111,981.68 × 19,249
  4. Step 4: Simplify right side
    74,653x = 2,155,535,358.32
  5. Step 5: Solve for x
    x = 2,155,535,358.32/74,653
  6. Step 6: Final answer
    x = 28,874.06

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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.