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Finding the Fourth Proportional to 74,655, 111,984.68 and 19,251

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Solution

The fourth proportional to 74,655, 111,984.68 and 19,251 is: 28,877.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,655 : 111,984.68 = 19,251 : x
  2. Step 2: Convert to fraction form
    74,655/111,984.68 = 19,251/x
  3. Step 3: Cross multiply
    74,655x = 111,984.68 × 19,251
  4. Step 4: Simplify right side
    74,655x = 2,155,817,074.68
  5. Step 5: Solve for x
    x = 2,155,817,074.68/74,655
  6. Step 6: Final answer
    x = 28,877.06

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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.