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Finding the Fourth Proportional to 36,672.30, 55,117.80 and 31,860.90

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Solution

The fourth proportional to 36,672.30, 55,117.80 and 31,860.90 is: 47,886.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,672.30 : 55,117.80 = 31,860.90 : x
  2. Step 2: Convert to fraction form
    36,672.30/55,117.80 = 31,860.90/x
  3. Step 3: Cross multiply
    36,672.30x = 55,117.80 × 31,860.90
  4. Step 4: Simplify right side
    36,672.30x = 1,756,102,714.02
  5. Step 5: Solve for x
    x = 1,756,102,714.02/36,672.30
  6. Step 6: Final answer
    x = 47,886.35

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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.