Home / 48,128.89-72,205.63-18,538.78

Finding the Fourth Proportional to 48,128.89, 72,205.63 and 18,538.78

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Solution

The fourth proportional to 48,128.89, 72,205.63 and 18,538.78 is: 27,812.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,128.89 : 72,205.63 = 18,538.78 : x
  2. Step 2: Convert to fraction form
    48,128.89/72,205.63 = 18,538.78/x
  3. Step 3: Cross multiply
    48,128.89x = 72,205.63 × 18,538.78
  4. Step 4: Simplify right side
    48,128.89x = 1,338,604,289.33
  5. Step 5: Solve for x
    x = 1,338,604,289.33/48,128.89
  6. Step 6: Final answer
    x = 27,812.91

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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.