Home / 48,507.16-72,788.64-20,425

Finding the Fourth Proportional to 48,507.16, 72,788.64 and 20,425

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Solution

The fourth proportional to 48,507.16, 72,788.64 and 20,425 is: 30,649.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,507.16 : 72,788.64 = 20,425 : x
  2. Step 2: Convert to fraction form
    48,507.16/72,788.64 = 20,425/x
  3. Step 3: Cross multiply
    48,507.16x = 72,788.64 × 20,425
  4. Step 4: Simplify right side
    48,507.16x = 1,486,707,972
  5. Step 5: Solve for x
    x = 1,486,707,972/48,507.16
  6. Step 6: Final answer
    x = 30,649.25

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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.