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Finding the Fourth Proportional to 60,387.84, 90,519.72 and 20,923.32

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Solution

The fourth proportional to 60,387.84, 90,519.72 and 20,923.32 is: 31,363.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,387.84 : 90,519.72 = 20,923.32 : x
  2. Step 2: Convert to fraction form
    60,387.84/90,519.72 = 20,923.32/x
  3. Step 3: Cross multiply
    60,387.84x = 90,519.72 × 20,923.32
  4. Step 4: Simplify right side
    60,387.84x = 1,893,973,067.87
  5. Step 5: Solve for x
    x = 1,893,973,067.87/60,387.84
  6. Step 6: Final answer
    x = 31,363.48

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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.