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Finding the Fourth Proportional to 56,866.63, 85,310.88 and 21,803.55

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Solution

The fourth proportional to 56,866.63, 85,310.88 and 21,803.55 is: 32,709.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,866.63 : 85,310.88 = 21,803.55 : x
  2. Step 2: Convert to fraction form
    56,866.63/85,310.88 = 21,803.55/x
  3. Step 3: Cross multiply
    56,866.63x = 85,310.88 × 21,803.55
  4. Step 4: Simplify right side
    56,866.63x = 1,860,080,509.06
  5. Step 5: Solve for x
    x = 1,860,080,509.06/56,866.63
  6. Step 6: Final answer
    x = 32,709.52

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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.