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Finding the Fourth Proportional to 58,650.39, 87,957 and 21,205.50

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Solution

The fourth proportional to 58,650.39, 87,957 and 21,205.50 is: 31,801.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,650.39 : 87,957 = 21,205.50 : x
  2. Step 2: Convert to fraction form
    58,650.39/87,957 = 21,205.50/x
  3. Step 3: Cross multiply
    58,650.39x = 87,957 × 21,205.50
  4. Step 4: Simplify right side
    58,650.39x = 1,865,172,493.34
  5. Step 5: Solve for x
    x = 1,865,172,493.34/58,650.39
  6. Step 6: Final answer
    x = 31,801.54

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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.