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Finding the Fourth Proportional to 31,118.80, 46,591.80 and 30,254.80

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Solution

The fourth proportional to 31,118.80, 46,591.80 and 30,254.80 is: 45,298.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,118.80 : 46,591.80 = 30,254.80 : x
  2. Step 2: Convert to fraction form
    31,118.80/46,591.80 = 30,254.80/x
  3. Step 3: Cross multiply
    31,118.80x = 46,591.80 × 30,254.80
  4. Step 4: Simplify right side
    31,118.80x = 1,409,625,590.64
  5. Step 5: Solve for x
    x = 1,409,625,590.64/31,118.80
  6. Step 6: Final answer
    x = 45,298.20

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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.