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Finding the Fourth Proportional to 58,150.64, 87,251.88 and 21,206

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Solution

The fourth proportional to 58,150.64, 87,251.88 and 21,206 is: 31,818.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,150.64 : 87,251.88 = 21,206 : x
  2. Step 2: Convert to fraction form
    58,150.64/87,251.88 = 21,206/x
  3. Step 3: Cross multiply
    58,150.64x = 87,251.88 × 21,206
  4. Step 4: Simplify right side
    58,150.64x = 1,850,263,367.28
  5. Step 5: Solve for x
    x = 1,850,263,367.28/58,150.64
  6. Step 6: Final answer
    x = 31,818.45

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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.