Home / 85,717.20-128,594.16-43,603.14

Finding the Fourth Proportional to 85,717.20, 128,594.16 and 43,603.14

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Solution

The fourth proportional to 85,717.20, 128,594.16 and 43,603.14 is: 65,414.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,717.20 : 128,594.16 = 43,603.14 : x
  2. Step 2: Convert to fraction form
    85,717.20/128,594.16 = 43,603.14/x
  3. Step 3: Cross multiply
    85,717.20x = 128,594.16 × 43,603.14
  4. Step 4: Simplify right side
    85,717.20x = 5,607,109,161.66
  5. Step 5: Solve for x
    x = 5,607,109,161.66/85,717.20
  6. Step 6: Final answer
    x = 65,414.05

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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.