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Finding the Fourth Proportional to 56,906.56, 78,486.64 and 36,490.57

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Solution

The fourth proportional to 56,906.56, 78,486.64 and 36,490.57 is: 50,328.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,906.56 : 78,486.64 = 36,490.57 : x
  2. Step 2: Convert to fraction form
    56,906.56/78,486.64 = 36,490.57/x
  3. Step 3: Cross multiply
    56,906.56x = 78,486.64 × 36,490.57
  4. Step 4: Simplify right side
    56,906.56x = 2,864,022,230.98
  5. Step 5: Solve for x
    x = 2,864,022,230.98/56,906.56
  6. Step 6: Final answer
    x = 50,328.51

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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.