Home / 85,479.06-128,107.56-34,819.02

Finding the Fourth Proportional to 85,479.06, 128,107.56 and 34,819.02

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Solution

The fourth proportional to 85,479.06, 128,107.56 and 34,819.02 is: 52,183.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,479.06 : 128,107.56 = 34,819.02 : x
  2. Step 2: Convert to fraction form
    85,479.06/128,107.56 = 34,819.02/x
  3. Step 3: Cross multiply
    85,479.06x = 128,107.56 × 34,819.02
  4. Step 4: Simplify right side
    85,479.06x = 4,460,579,693.79
  5. Step 5: Solve for x
    x = 4,460,579,693.79/85,479.06
  6. Step 6: Final answer
    x = 52,183.30

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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.