Home / 191,629.78-287,422.80-51,377.50

Finding the Fourth Proportional to 191,629.78, 287,422.80 and 51,377.50

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Solution

The fourth proportional to 191,629.78, 287,422.80 and 51,377.50 is: 77,060.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,629.78 : 287,422.80 = 51,377.50 : x
  2. Step 2: Convert to fraction form
    191,629.78/287,422.80 = 51,377.50/x
  3. Step 3: Cross multiply
    191,629.78x = 287,422.80 × 51,377.50
  4. Step 4: Simplify right side
    191,629.78x = 14,767,064,907
  5. Step 5: Solve for x
    x = 14,767,064,907/191,629.78
  6. Step 6: Final answer
    x = 77,060.39

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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.