Home / 85,649.28-128,464.67-22,475.76

Finding the Fourth Proportional to 85,649.28, 128,464.67 and 22,475.76

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Solution

The fourth proportional to 85,649.28, 128,464.67 and 22,475.76 is: 33,711.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,649.28 : 128,464.67 = 22,475.76 : x
  2. Step 2: Convert to fraction form
    85,649.28/128,464.67 = 22,475.76/x
  3. Step 3: Cross multiply
    85,649.28x = 128,464.67 × 22,475.76
  4. Step 4: Simplify right side
    85,649.28x = 2,887,341,091.40
  5. Step 5: Solve for x
    x = 2,887,341,091.40/85,649.28
  6. Step 6: Final answer
    x = 33,711.21

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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.