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Finding the Fourth Proportional to 58,582.65, 87,855.82 and 21,137.86

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Solution

The fourth proportional to 58,582.65, 87,855.82 and 21,137.86 is: 31,700.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,582.65 : 87,855.82 = 21,137.86 : x
  2. Step 2: Convert to fraction form
    58,582.65/87,855.82 = 21,137.86/x
  3. Step 3: Cross multiply
    58,582.65x = 87,855.82 × 21,137.86
  4. Step 4: Simplify right side
    58,582.65x = 1,857,083,750.86
  5. Step 5: Solve for x
    x = 1,857,083,750.86/58,582.65
  6. Step 6: Final answer
    x = 31,700.23

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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.