Home / 48,128.88-72,205.62-18,538.77

Finding the Fourth Proportional to 48,128.88, 72,205.62 and 18,538.77

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Solution

The fourth proportional to 48,128.88, 72,205.62 and 18,538.77 is: 27,812.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,128.88 : 72,205.62 = 18,538.77 : x
  2. Step 2: Convert to fraction form
    48,128.88/72,205.62 = 18,538.77/x
  3. Step 3: Cross multiply
    48,128.88x = 72,205.62 × 18,538.77
  4. Step 4: Simplify right side
    48,128.88x = 1,338,603,381.89
  5. Step 5: Solve for x
    x = 1,338,603,381.89/48,128.88
  6. Step 6: Final answer
    x = 27,812.89

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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.