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Finding the Fourth Proportional to 72,645.88, 100,253.88 and 40,814.14

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Solution

The fourth proportional to 72,645.88, 100,253.88 and 40,814.14 is: 56,324.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,645.88 : 100,253.88 = 40,814.14 : x
  2. Step 2: Convert to fraction form
    72,645.88/100,253.88 = 40,814.14/x
  3. Step 3: Cross multiply
    72,645.88x = 100,253.88 × 40,814.14
  4. Step 4: Simplify right side
    72,645.88x = 4,091,775,893.86
  5. Step 5: Solve for x
    x = 4,091,775,893.86/72,645.88
  6. Step 6: Final answer
    x = 56,324.95

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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.