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Finding the Fourth Proportional to 38,378.76, 57,579.77 and 19,672.06

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Solution

The fourth proportional to 38,378.76, 57,579.77 and 19,672.06 is: 29,514.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,378.76 : 57,579.77 = 19,672.06 : x
  2. Step 2: Convert to fraction form
    38,378.76/57,579.77 = 19,672.06/x
  3. Step 3: Cross multiply
    38,378.76x = 57,579.77 × 19,672.06
  4. Step 4: Simplify right side
    38,378.76x = 1,132,712,595.46
  5. Step 5: Solve for x
    x = 1,132,712,595.46/38,378.76
  6. Step 6: Final answer
    x = 29,514.05

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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.