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Finding the Fourth Proportional to 33,319.90, 45,978.87 and 19,170.01

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Solution

The fourth proportional to 33,319.90, 45,978.87 and 19,170.01 is: 26,453.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,319.90 : 45,978.87 = 19,170.01 : x
  2. Step 2: Convert to fraction form
    33,319.90/45,978.87 = 19,170.01/x
  3. Step 3: Cross multiply
    33,319.90x = 45,978.87 × 19,170.01
  4. Step 4: Simplify right side
    33,319.90x = 881,415,397.69
  5. Step 5: Solve for x
    x = 881,415,397.69/33,319.90
  6. Step 6: Final answer
    x = 26,453.12

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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.