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Finding the Fourth Proportional to 42,021, 57,988.98 and 25,254

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Solution

The fourth proportional to 42,021, 57,988.98 and 25,254 is: 34,850.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,021 : 57,988.98 = 25,254 : x
  2. Step 2: Convert to fraction form
    42,021/57,988.98 = 25,254/x
  3. Step 3: Cross multiply
    42,021x = 57,988.98 × 25,254
  4. Step 4: Simplify right side
    42,021x = 1,464,453,700.92
  5. Step 5: Solve for x
    x = 1,464,453,700.92/42,021
  6. Step 6: Final answer
    x = 34,850.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.