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Finding the Fourth Proportional to 74,471.87, 102,770.98 and 40,480.35

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Solution

The fourth proportional to 74,471.87, 102,770.98 and 40,480.35 is: 55,862.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,471.87 : 102,770.98 = 40,480.35 : x
  2. Step 2: Convert to fraction form
    74,471.87/102,770.98 = 40,480.35/x
  3. Step 3: Cross multiply
    74,471.87x = 102,770.98 × 40,480.35
  4. Step 4: Simplify right side
    74,471.87x = 4,160,205,037.84
  5. Step 5: Solve for x
    x = 4,160,205,037.84/74,471.87
  6. Step 6: Final answer
    x = 55,862.77

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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.