Home / 61,213.20-91,722.60-51,298.80

Finding the Fourth Proportional to 61,213.20, 91,722.60 and 51,298.80

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Solution

The fourth proportional to 61,213.20, 91,722.60 and 51,298.80 is: 76,866.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,213.20 : 91,722.60 = 51,298.80 : x
  2. Step 2: Convert to fraction form
    61,213.20/91,722.60 = 51,298.80/x
  3. Step 3: Cross multiply
    61,213.20x = 91,722.60 × 51,298.80
  4. Step 4: Simplify right side
    61,213.20x = 4,705,259,312.88
  5. Step 5: Solve for x
    x = 4,705,259,312.88/61,213.20
  6. Step 6: Final answer
    x = 76,866.74

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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.