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Finding the Fourth Proportional to 76,337.60, 114,507.20 and 20,933.60

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Solution

The fourth proportional to 76,337.60, 114,507.20 and 20,933.60 is: 31,400.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,337.60 : 114,507.20 = 20,933.60 : x
  2. Step 2: Convert to fraction form
    76,337.60/114,507.20 = 20,933.60/x
  3. Step 3: Cross multiply
    76,337.60x = 114,507.20 × 20,933.60
  4. Step 4: Simplify right side
    76,337.60x = 2,397,047,921.92
  5. Step 5: Solve for x
    x = 2,397,047,921.92/76,337.60
  6. Step 6: Final answer
    x = 31,400.62

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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.