Home / 42,720.78-64,097.82-17,754.60

Finding the Fourth Proportional to 42,720.78, 64,097.82 and 17,754.60

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Solution

The fourth proportional to 42,720.78, 64,097.82 and 17,754.60 is: 26,638.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,720.78 : 64,097.82 = 17,754.60 : x
  2. Step 2: Convert to fraction form
    42,720.78/64,097.82 = 17,754.60/x
  3. Step 3: Cross multiply
    42,720.78x = 64,097.82 × 17,754.60
  4. Step 4: Simplify right side
    42,720.78x = 1,138,031,154.97
  5. Step 5: Solve for x
    x = 1,138,031,154.97/42,720.78
  6. Step 6: Final answer
    x = 26,638.82

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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.