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Finding the Fourth Proportional to 74,893.60, 112,309.53 and 30,490.30

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Solution

The fourth proportional to 74,893.60, 112,309.53 and 30,490.30 is: 45,722.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,893.60 : 112,309.53 = 30,490.30 : x
  2. Step 2: Convert to fraction form
    74,893.60/112,309.53 = 30,490.30/x
  3. Step 3: Cross multiply
    74,893.60x = 112,309.53 × 30,490.30
  4. Step 4: Simplify right side
    74,893.60x = 3,424,351,262.56
  5. Step 5: Solve for x
    x = 3,424,351,262.56/74,893.60
  6. Step 6: Final answer
    x = 45,722.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.