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Finding the Fourth Proportional to 73,122.99, 100,910.40 and 42,908.82

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Solution

The fourth proportional to 73,122.99, 100,910.40 and 42,908.82 is: 59,214.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,122.99 : 100,910.40 = 42,908.82 : x
  2. Step 2: Convert to fraction form
    73,122.99/100,910.40 = 42,908.82/x
  3. Step 3: Cross multiply
    73,122.99x = 100,910.40 × 42,908.82
  4. Step 4: Simplify right side
    73,122.99x = 4,329,946,189.73
  5. Step 5: Solve for x
    x = 4,329,946,189.73/73,122.99
  6. Step 6: Final answer
    x = 59,214.57

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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.