Home / 191,721.78-287,584.50-51,480.42

Finding the Fourth Proportional to 191,721.78, 287,584.50 and 51,480.42

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Solution

The fourth proportional to 191,721.78, 287,584.50 and 51,480.42 is: 77,221.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,721.78 : 287,584.50 = 51,480.42 : x
  2. Step 2: Convert to fraction form
    191,721.78/287,584.50 = 51,480.42/x
  3. Step 3: Cross multiply
    191,721.78x = 287,584.50 × 51,480.42
  4. Step 4: Simplify right side
    191,721.78x = 14,804,970,845.49
  5. Step 5: Solve for x
    x = 14,804,970,845.49/191,721.78
  6. Step 6: Final answer
    x = 77,221.12

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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.