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Finding the Fourth Proportional to 35,167.69, 52,715.08 and 21,989.80

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Solution

The fourth proportional to 35,167.69, 52,715.08 and 21,989.80 is: 32,961.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,167.69 : 52,715.08 = 21,989.80 : x
  2. Step 2: Convert to fraction form
    35,167.69/52,715.08 = 21,989.80/x
  3. Step 3: Cross multiply
    35,167.69x = 52,715.08 × 21,989.80
  4. Step 4: Simplify right side
    35,167.69x = 1,159,194,066.18
  5. Step 5: Solve for x
    x = 1,159,194,066.18/35,167.69
  6. Step 6: Final answer
    x = 32,961.91

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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.