Home / 85,822.30-128,733.45-50,743.90

Finding the Fourth Proportional to 85,822.30, 128,733.45 and 50,743.90

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Solution

The fourth proportional to 85,822.30, 128,733.45 and 50,743.90 is: 76,115.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,822.30 : 128,733.45 = 50,743.90 : x
  2. Step 2: Convert to fraction form
    85,822.30/128,733.45 = 50,743.90/x
  3. Step 3: Cross multiply
    85,822.30x = 128,733.45 × 50,743.90
  4. Step 4: Simplify right side
    85,822.30x = 6,532,437,313.46
  5. Step 5: Solve for x
    x = 6,532,437,313.46/85,822.30
  6. Step 6: Final answer
    x = 76,115.85

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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.