Home / 85,537.55-128,262.51-45,579.30

Finding the Fourth Proportional to 85,537.55, 128,262.51 and 45,579.30

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Solution

The fourth proportional to 85,537.55, 128,262.51 and 45,579.30 is: 68,345.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,537.55 : 128,262.51 = 45,579.30 : x
  2. Step 2: Convert to fraction form
    85,537.55/128,262.51 = 45,579.30/x
  3. Step 3: Cross multiply
    85,537.55x = 128,262.51 × 45,579.30
  4. Step 4: Simplify right side
    85,537.55x = 5,846,115,422.04
  5. Step 5: Solve for x
    x = 5,846,115,422.04/85,537.55
  6. Step 6: Final answer
    x = 68,345.61

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1.5x scale

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.