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Finding the Fourth Proportional to 72,850.69, 100,541.15 and 42,634.21

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Solution

The fourth proportional to 72,850.69, 100,541.15 and 42,634.21 is: 58,839.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,850.69 : 100,541.15 = 42,634.21 : x
  2. Step 2: Convert to fraction form
    72,850.69/100,541.15 = 42,634.21/x
  3. Step 3: Cross multiply
    72,850.69x = 100,541.15 × 42,634.21
  4. Step 4: Simplify right side
    72,850.69x = 4,286,492,357.97
  5. Step 5: Solve for x
    x = 4,286,492,357.97/72,850.69
  6. Step 6: Final answer
    x = 58,839.42

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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.