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Finding the Fourth Proportional to 60,781, 91,214.70 and 23,845

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Solution

The fourth proportional to 60,781, 91,214.70 and 23,845 is: 35,784.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,781 : 91,214.70 = 23,845 : x
  2. Step 2: Convert to fraction form
    60,781/91,214.70 = 23,845/x
  3. Step 3: Cross multiply
    60,781x = 91,214.70 × 23,845
  4. Step 4: Simplify right side
    60,781x = 2,175,014,521.50
  5. Step 5: Solve for x
    x = 2,175,014,521.50/60,781
  6. Step 6: Final answer
    x = 35,784.45

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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.