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Finding the Fourth Proportional to 52,859.36, 79,228.56 and 21,656

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Solution

The fourth proportional to 52,859.36, 79,228.56 and 21,656 is: 32,459.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,859.36 : 79,228.56 = 21,656 : x
  2. Step 2: Convert to fraction form
    52,859.36/79,228.56 = 21,656/x
  3. Step 3: Cross multiply
    52,859.36x = 79,228.56 × 21,656
  4. Step 4: Simplify right side
    52,859.36x = 1,715,773,695.36
  5. Step 5: Solve for x
    x = 1,715,773,695.36/52,859.36
  6. Step 6: Final answer
    x = 32,459.22

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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.