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Finding the Fourth Proportional to 52,716, 79,065 and 17,655.60

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Solution

The fourth proportional to 52,716, 79,065 and 17,655.60 is: 26,480.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,716 : 79,065 = 17,655.60 : x
  2. Step 2: Convert to fraction form
    52,716/79,065 = 17,655.60/x
  3. Step 3: Cross multiply
    52,716x = 79,065 × 17,655.60
  4. Step 4: Simplify right side
    52,716x = 1,395,940,014
  5. Step 5: Solve for x
    x = 1,395,940,014/52,716
  6. Step 6: Final answer
    x = 26,480.39

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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.