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Finding the Fourth Proportional to 72,714.60, 100,344.42 and 47,563.56

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Solution

The fourth proportional to 72,714.60, 100,344.42 and 47,563.56 is: 65,636.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,714.60 : 100,344.42 = 47,563.56 : x
  2. Step 2: Convert to fraction form
    72,714.60/100,344.42 = 47,563.56/x
  3. Step 3: Cross multiply
    72,714.60x = 100,344.42 × 47,563.56
  4. Step 4: Simplify right side
    72,714.60x = 4,772,737,841.34
  5. Step 5: Solve for x
    x = 4,772,737,841.34/72,714.60
  6. Step 6: Final answer
    x = 65,636.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.