Home / 47,919.90-66,129.30-27,780.87

Finding the Fourth Proportional to 47,919.90, 66,129.30 and 27,780.87

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Solution

The fourth proportional to 47,919.90, 66,129.30 and 27,780.87 is: 38,337.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,919.90 : 66,129.30 = 27,780.87 : x
  2. Step 2: Convert to fraction form
    47,919.90/66,129.30 = 27,780.87/x
  3. Step 3: Cross multiply
    47,919.90x = 66,129.30 × 27,780.87
  4. Step 4: Simplify right side
    47,919.90x = 1,837,129,486.49
  5. Step 5: Solve for x
    x = 1,837,129,486.49/47,919.90
  6. Step 6: Final answer
    x = 38,337.51

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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.