Home / 75,129.40-103,681.50-41,135.86

Finding the Fourth Proportional to 75,129.40, 103,681.50 and 41,135.86

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Solution

The fourth proportional to 75,129.40, 103,681.50 and 41,135.86 is: 56,769.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,129.40 : 103,681.50 = 41,135.86 : x
  2. Step 2: Convert to fraction form
    75,129.40/103,681.50 = 41,135.86/x
  3. Step 3: Cross multiply
    75,129.40x = 103,681.50 × 41,135.86
  4. Step 4: Simplify right side
    75,129.40x = 4,265,027,668.59
  5. Step 5: Solve for x
    x = 4,265,027,668.59/75,129.40
  6. Step 6: Final answer
    x = 56,769.09

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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.