Home / 75,133.79-103,687.11-41,143.72

Finding the Fourth Proportional to 75,133.79, 103,687.11 and 41,143.72

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Solution

The fourth proportional to 75,133.79, 103,687.11 and 41,143.72 is: 56,779.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,133.79 : 103,687.11 = 41,143.72 : x
  2. Step 2: Convert to fraction form
    75,133.79/103,687.11 = 41,143.72/x
  3. Step 3: Cross multiply
    75,133.79x = 103,687.11 × 41,143.72
  4. Step 4: Simplify right side
    75,133.79x = 4,266,073,421.45
  5. Step 5: Solve for x
    x = 4,266,073,421.45/75,133.79
  6. Step 6: Final answer
    x = 56,779.69

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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.