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Finding the Fourth Proportional to 57,022.44, 78,690.47 and 31,529.46

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Solution

The fourth proportional to 57,022.44, 78,690.47 and 31,529.46 is: 43,510.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,022.44 : 78,690.47 = 31,529.46 : x
  2. Step 2: Convert to fraction form
    57,022.44/78,690.47 = 31,529.46/x
  3. Step 3: Cross multiply
    57,022.44x = 78,690.47 × 31,529.46
  4. Step 4: Simplify right side
    57,022.44x = 2,481,068,026.25
  5. Step 5: Solve for x
    x = 2,481,068,026.25/57,022.44
  6. Step 6: Final answer
    x = 43,510.38

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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.