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Finding the Fourth Proportional to 60,756.36, 91,138.86 and 19,203

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Solution

The fourth proportional to 60,756.36, 91,138.86 and 19,203 is: 28,805.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,756.36 : 91,138.86 = 19,203 : x
  2. Step 2: Convert to fraction form
    60,756.36/91,138.86 = 19,203/x
  3. Step 3: Cross multiply
    60,756.36x = 91,138.86 × 19,203
  4. Step 4: Simplify right side
    60,756.36x = 1,750,139,528.58
  5. Step 5: Solve for x
    x = 1,750,139,528.58/60,756.36
  6. Step 6: Final answer
    x = 28,805.87

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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.