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Finding the Fourth Proportional to 62,761, 94,153.10 and 20,643.40

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Solution

The fourth proportional to 62,761, 94,153.10 and 20,643.40 is: 30,968.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,761 : 94,153.10 = 20,643.40 : x
  2. Step 2: Convert to fraction form
    62,761/94,153.10 = 20,643.40/x
  3. Step 3: Cross multiply
    62,761x = 94,153.10 × 20,643.40
  4. Step 4: Simplify right side
    62,761x = 1,943,640,104.54
  5. Step 5: Solve for x
    x = 1,943,640,104.54/62,761
  6. Step 6: Final answer
    x = 30,968.92

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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.