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Finding the Fourth Proportional to 56,574.31, 84,865.57 and 19,138.34

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Solution

The fourth proportional to 56,574.31, 84,865.57 and 19,138.34 is: 28,708.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,574.31 : 84,865.57 = 19,138.34 : x
  2. Step 2: Convert to fraction form
    56,574.31/84,865.57 = 19,138.34/x
  3. Step 3: Cross multiply
    56,574.31x = 84,865.57 × 19,138.34
  4. Step 4: Simplify right side
    56,574.31x = 1,624,185,612.93
  5. Step 5: Solve for x
    x = 1,624,185,612.93/56,574.31
  6. Step 6: Final answer
    x = 28,708.89

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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.