Home / 85,748.30-128,568.45-35,863.10

Finding the Fourth Proportional to 85,748.30, 128,568.45 and 35,863.10

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Solution

The fourth proportional to 85,748.30, 128,568.45 and 35,863.10 is: 53,772.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,748.30 : 128,568.45 = 35,863.10 : x
  2. Step 2: Convert to fraction form
    85,748.30/128,568.45 = 35,863.10/x
  3. Step 3: Cross multiply
    85,748.30x = 128,568.45 × 35,863.10
  4. Step 4: Simplify right side
    85,748.30x = 4,610,863,179.20
  5. Step 5: Solve for x
    x = 4,610,863,179.20/85,748.30
  6. Step 6: Final answer
    x = 53,772.07

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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.