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Finding the Fourth Proportional to 72,923.60, 109,212.60 and 49,422.80

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Solution

The fourth proportional to 72,923.60, 109,212.60 and 49,422.80 is: 74,017.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,923.60 : 109,212.60 = 49,422.80 : x
  2. Step 2: Convert to fraction form
    72,923.60/109,212.60 = 49,422.80/x
  3. Step 3: Cross multiply
    72,923.60x = 109,212.60 × 49,422.80
  4. Step 4: Simplify right side
    72,923.60x = 5,397,592,487.28
  5. Step 5: Solve for x
    x = 5,397,592,487.28/72,923.60
  6. Step 6: Final answer
    x = 74,017.09

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1.5x scale

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.