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Finding the Fourth Proportional to 31,751.66, 47,617.76 and 21,953.90

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Solution

The fourth proportional to 31,751.66, 47,617.76 and 21,953.90 is: 32,924.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,751.66 : 47,617.76 = 21,953.90 : x
  2. Step 2: Convert to fraction form
    31,751.66/47,617.76 = 21,953.90/x
  3. Step 3: Cross multiply
    31,751.66x = 47,617.76 × 21,953.90
  4. Step 4: Simplify right side
    31,751.66x = 1,045,395,193.41
  5. Step 5: Solve for x
    x = 1,045,395,193.41/31,751.66
  6. Step 6: Final answer
    x = 32,924.12

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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.