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Finding the Fourth Proportional to 56,556.61, 84,820.90 and 19,115.85

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Solution

The fourth proportional to 56,556.61, 84,820.90 and 19,115.85 is: 28,669.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,556.61 : 84,820.90 = 19,115.85 : x
  2. Step 2: Convert to fraction form
    56,556.61/84,820.90 = 19,115.85/x
  3. Step 3: Cross multiply
    56,556.61x = 84,820.90 × 19,115.85
  4. Step 4: Simplify right side
    56,556.61x = 1,621,423,871.55
  5. Step 5: Solve for x
    x = 1,621,423,871.55/56,556.61
  6. Step 6: Final answer
    x = 28,669.04

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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.