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Finding the Fourth Proportional to 48,507.36, 72,757.68 and 18,919.68

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Solution

The fourth proportional to 48,507.36, 72,757.68 and 18,919.68 is: 28,378.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,507.36 : 72,757.68 = 18,919.68 : x
  2. Step 2: Convert to fraction form
    48,507.36/72,757.68 = 18,919.68/x
  3. Step 3: Cross multiply
    48,507.36x = 72,757.68 × 18,919.68
  4. Step 4: Simplify right side
    48,507.36x = 1,376,552,023.14
  5. Step 5: Solve for x
    x = 1,376,552,023.14/48,507.36
  6. Step 6: Final answer
    x = 28,378.21

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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.