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Finding the Fourth Proportional to 72,863.70, 100,554.39 and 42,651.84

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Solution

The fourth proportional to 72,863.70, 100,554.39 and 42,651.84 is: 58,860.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,863.70 : 100,554.39 = 42,651.84 : x
  2. Step 2: Convert to fraction form
    72,863.70/100,554.39 = 42,651.84/x
  3. Step 3: Cross multiply
    72,863.70x = 100,554.39 × 42,651.84
  4. Step 4: Simplify right side
    72,863.70x = 4,288,829,753.58
  5. Step 5: Solve for x
    x = 4,288,829,753.58/72,863.70
  6. Step 6: Final answer
    x = 58,860.99

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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.