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Finding the Fourth Proportional to 53,113.58, 79,642.91 and 15,668.88

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Solution

The fourth proportional to 53,113.58, 79,642.91 and 15,668.88 is: 23,495.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,113.58 : 79,642.91 = 15,668.88 : x
  2. Step 2: Convert to fraction form
    53,113.58/79,642.91 = 15,668.88/x
  3. Step 3: Cross multiply
    53,113.58x = 79,642.91 × 15,668.88
  4. Step 4: Simplify right side
    53,113.58x = 1,247,914,940.15
  5. Step 5: Solve for x
    x = 1,247,914,940.15/53,113.58
  6. Step 6: Final answer
    x = 23,495.21

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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.