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Finding the Fourth Proportional to 55,574.64, 83,370.62 and 18,630

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Solution

The fourth proportional to 55,574.64, 83,370.62 and 18,630 is: 27,947.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,574.64 : 83,370.62 = 18,630 : x
  2. Step 2: Convert to fraction form
    55,574.64/83,370.62 = 18,630/x
  3. Step 3: Cross multiply
    55,574.64x = 83,370.62 × 18,630
  4. Step 4: Simplify right side
    55,574.64x = 1,553,194,650.60
  5. Step 5: Solve for x
    x = 1,553,194,650.60/55,574.64
  6. Step 6: Final answer
    x = 27,947.90

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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.