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Finding the Fourth Proportional to 74,073.76, 102,221.98 and 40,539.76

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Solution

The fourth proportional to 74,073.76, 102,221.98 and 40,539.76 is: 55,944.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,073.76 : 102,221.98 = 40,539.76 : x
  2. Step 2: Convert to fraction form
    74,073.76/102,221.98 = 40,539.76/x
  3. Step 3: Cross multiply
    74,073.76x = 102,221.98 × 40,539.76
  4. Step 4: Simplify right side
    74,073.76x = 4,144,054,535.92
  5. Step 5: Solve for x
    x = 4,144,054,535.92/74,073.76
  6. Step 6: Final answer
    x = 55,944.97

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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.