Home / 31,780.48-47,721.62-26,221.72

Finding the Fourth Proportional to 31,780.48, 47,721.62 and 26,221.72

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Solution

The fourth proportional to 31,780.48, 47,721.62 and 26,221.72 is: 39,374.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,780.48 : 47,721.62 = 26,221.72 : x
  2. Step 2: Convert to fraction form
    31,780.48/47,721.62 = 26,221.72/x
  3. Step 3: Cross multiply
    31,780.48x = 47,721.62 × 26,221.72
  4. Step 4: Simplify right side
    31,780.48x = 1,251,342,957.59
  5. Step 5: Solve for x
    x = 1,251,342,957.59/31,780.48
  6. Step 6: Final answer
    x = 39,374.58

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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.