Home / 85,568.76-128,341.26-26,406.36

Finding the Fourth Proportional to 85,568.76, 128,341.26 and 26,406.36

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Solution

The fourth proportional to 85,568.76, 128,341.26 and 26,406.36 is: 39,605.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,568.76 : 128,341.26 = 26,406.36 : x
  2. Step 2: Convert to fraction form
    85,568.76/128,341.26 = 26,406.36/x
  3. Step 3: Cross multiply
    85,568.76x = 128,341.26 × 26,406.36
  4. Step 4: Simplify right side
    85,568.76x = 3,389,025,514.41
  5. Step 5: Solve for x
    x = 3,389,025,514.41/85,568.76
  6. Step 6: Final answer
    x = 39,605.87

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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.