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Finding the Fourth Proportional to 72,026.73, 99,385 and 40,195.55

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Solution

The fourth proportional to 72,026.73, 99,385 and 40,195.55 is: 55,463.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,026.73 : 99,385 = 40,195.55 : x
  2. Step 2: Convert to fraction form
    72,026.73/99,385 = 40,195.55/x
  3. Step 3: Cross multiply
    72,026.73x = 99,385 × 40,195.55
  4. Step 4: Simplify right side
    72,026.73x = 3,994,834,736.75
  5. Step 5: Solve for x
    x = 3,994,834,736.75/72,026.73
  6. Step 6: Final answer
    x = 55,463.23

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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.