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Finding the Fourth Proportional to 101,479.80, 152,241.30 and 31,366.20

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Solution

The fourth proportional to 101,479.80, 152,241.30 and 31,366.20 is: 47,055.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,479.80 : 152,241.30 = 31,366.20 : x
  2. Step 2: Convert to fraction form
    101,479.80/152,241.30 = 31,366.20/x
  3. Step 3: Cross multiply
    101,479.80x = 152,241.30 × 31,366.20
  4. Step 4: Simplify right side
    101,479.80x = 4,775,231,064.06
  5. Step 5: Solve for x
    x = 4,775,231,064.06/101,479.80
  6. Step 6: Final answer
    x = 47,055.98

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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.