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Finding the Fourth Proportional to 67,290.54, 100,821.03 and 47,531.04

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Solution

The fourth proportional to 67,290.54, 100,821.03 and 47,531.04 is: 71,215.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,290.54 : 100,821.03 = 47,531.04 : x
  2. Step 2: Convert to fraction form
    67,290.54/100,821.03 = 47,531.04/x
  3. Step 3: Cross multiply
    67,290.54x = 100,821.03 × 47,531.04
  4. Step 4: Simplify right side
    67,290.54x = 4,792,128,409.77
  5. Step 5: Solve for x
    x = 4,792,128,409.77/67,290.54
  6. Step 6: Final answer
    x = 71,215.48

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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.