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Finding the Fourth Proportional to 51,407.78, 77,111.67 and 16,347.47

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Solution

The fourth proportional to 51,407.78, 77,111.67 and 16,347.47 is: 24,521.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,407.78 : 77,111.67 = 16,347.47 : x
  2. Step 2: Convert to fraction form
    51,407.78/77,111.67 = 16,347.47/x
  3. Step 3: Cross multiply
    51,407.78x = 77,111.67 × 16,347.47
  4. Step 4: Simplify right side
    51,407.78x = 1,260,580,711.97
  5. Step 5: Solve for x
    x = 1,260,580,711.97/51,407.78
  6. Step 6: Final answer
    x = 24,521.21

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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.