Home / 115,074.40-172,611.60-36,212.80

Finding the Fourth Proportional to 115,074.40, 172,611.60 and 36,212.80

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Solution

The fourth proportional to 115,074.40, 172,611.60 and 36,212.80 is: 54,319.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,074.40 : 172,611.60 = 36,212.80 : x
  2. Step 2: Convert to fraction form
    115,074.40/172,611.60 = 36,212.80/x
  3. Step 3: Cross multiply
    115,074.40x = 172,611.60 × 36,212.80
  4. Step 4: Simplify right side
    115,074.40x = 6,250,749,348.48
  5. Step 5: Solve for x
    x = 6,250,749,348.48/115,074.40
  6. Step 6: Final answer
    x = 54,319.20

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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.