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Finding the Fourth Proportional to 75,111.78, 103,654.48 and 41,120.56

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Solution

The fourth proportional to 75,111.78, 103,654.48 and 41,120.56 is: 56,746.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,111.78 : 103,654.48 = 41,120.56 : x
  2. Step 2: Convert to fraction form
    75,111.78/103,654.48 = 41,120.56/x
  3. Step 3: Cross multiply
    75,111.78x = 103,654.48 × 41,120.56
  4. Step 4: Simplify right side
    75,111.78x = 4,262,330,264.11
  5. Step 5: Solve for x
    x = 4,262,330,264.11/75,111.78
  6. Step 6: Final answer
    x = 56,746.50

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1.5x scale

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.