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Finding the Fourth Proportional to 34,505.79, 51,719.80 and 16,987.92

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Solution

The fourth proportional to 34,505.79, 51,719.80 and 16,987.92 is: 25,462.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,505.79 : 51,719.80 = 16,987.92 : x
  2. Step 2: Convert to fraction form
    34,505.79/51,719.80 = 16,987.92/x
  3. Step 3: Cross multiply
    34,505.79x = 51,719.80 × 16,987.92
  4. Step 4: Simplify right side
    34,505.79x = 878,611,824.82
  5. Step 5: Solve for x
    x = 878,611,824.82/34,505.79
  6. Step 6: Final answer
    x = 25,462.74

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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.