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Finding the Fourth Proportional to 51,987.78, 77,999.76 and 16,927.20

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Solution

The fourth proportional to 51,987.78, 77,999.76 and 16,927.20 is: 25,396.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,987.78 : 77,999.76 = 16,927.20 : x
  2. Step 2: Convert to fraction form
    51,987.78/77,999.76 = 16,927.20/x
  3. Step 3: Cross multiply
    51,987.78x = 77,999.76 × 16,927.20
  4. Step 4: Simplify right side
    51,987.78x = 1,320,317,537.47
  5. Step 5: Solve for x
    x = 1,320,317,537.47/51,987.78
  6. Step 6: Final answer
    x = 25,396.69

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1.5x scale

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.