Home / 48,639.29-72,908.35-20,535.89

Finding the Fourth Proportional to 48,639.29, 72,908.35 and 20,535.89

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Solution

The fourth proportional to 48,639.29, 72,908.35 and 20,535.89 is: 30,782.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,639.29 : 72,908.35 = 20,535.89 : x
  2. Step 2: Convert to fraction form
    48,639.29/72,908.35 = 20,535.89/x
  3. Step 3: Cross multiply
    48,639.29x = 72,908.35 × 20,535.89
  4. Step 4: Simplify right side
    48,639.29x = 1,497,237,855.68
  5. Step 5: Solve for x
    x = 1,497,237,855.68/48,639.29
  6. Step 6: Final answer
    x = 30,782.48

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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.