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Finding the Fourth Proportional to 72,697.62, 100,290.56 and 48,475.23

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Solution

The fourth proportional to 72,697.62, 100,290.56 and 48,475.23 is: 66,874.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,697.62 : 100,290.56 = 48,475.23 : x
  2. Step 2: Convert to fraction form
    72,697.62/100,290.56 = 48,475.23/x
  3. Step 3: Cross multiply
    72,697.62x = 100,290.56 × 48,475.23
  4. Step 4: Simplify right side
    72,697.62x = 4,861,607,720.45
  5. Step 5: Solve for x
    x = 4,861,607,720.45/72,697.62
  6. Step 6: Final answer
    x = 66,874.37

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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.