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Finding the Fourth Proportional to 74,424.70, 102,705.67 and 40,432.92

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Solution

The fourth proportional to 74,424.70, 102,705.67 and 40,432.92 is: 55,797.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,424.70 : 102,705.67 = 40,432.92 : x
  2. Step 2: Convert to fraction form
    74,424.70/102,705.67 = 40,432.92/x
  3. Step 3: Cross multiply
    74,424.70x = 102,705.67 × 40,432.92
  4. Step 4: Simplify right side
    74,424.70x = 4,152,690,138.66
  5. Step 5: Solve for x
    x = 4,152,690,138.66/74,424.70
  6. Step 6: Final answer
    x = 55,797.20

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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.