Home / 85,922.60-128,819.09-56,347.88

Finding the Fourth Proportional to 85,922.60, 128,819.09 and 56,347.88

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Solution

The fourth proportional to 85,922.60, 128,819.09 and 56,347.88 is: 84,479.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,922.60 : 128,819.09 = 56,347.88 : x
  2. Step 2: Convert to fraction form
    85,922.60/128,819.09 = 56,347.88/x
  3. Step 3: Cross multiply
    85,922.60x = 128,819.09 × 56,347.88
  4. Step 4: Simplify right side
    85,922.60x = 7,258,682,121.80
  5. Step 5: Solve for x
    x = 7,258,682,121.80/85,922.60
  6. Step 6: Final answer
    x = 84,479.32

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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.