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Finding the Fourth Proportional to 60,717.50, 91,076.31 and 19,164.50

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Solution

The fourth proportional to 60,717.50, 91,076.31 and 19,164.50 is: 28,746.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,717.50 : 91,076.31 = 19,164.50 : x
  2. Step 2: Convert to fraction form
    60,717.50/91,076.31 = 19,164.50/x
  3. Step 3: Cross multiply
    60,717.50x = 91,076.31 × 19,164.50
  4. Step 4: Simplify right side
    60,717.50x = 1,745,431,943.00
  5. Step 5: Solve for x
    x = 1,745,431,943.00/60,717.50
  6. Step 6: Final answer
    x = 28,746.77

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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.