Home / 75,402.10-103,997.23-51,221.71

Finding the Fourth Proportional to 75,402.10, 103,997.23 and 51,221.71

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Solution

The fourth proportional to 75,402.10, 103,997.23 and 51,221.71 is: 70,646.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,402.10 : 103,997.23 = 51,221.71 : x
  2. Step 2: Convert to fraction form
    75,402.10/103,997.23 = 51,221.71/x
  3. Step 3: Cross multiply
    75,402.10x = 103,997.23 × 51,221.71
  4. Step 4: Simplify right side
    75,402.10x = 5,326,915,955.86
  5. Step 5: Solve for x
    x = 5,326,915,955.86/75,402.10
  6. Step 6: Final answer
    x = 70,646.79

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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.