Home / 86,161.68-129,150.03-41,690.40

Finding the Fourth Proportional to 86,161.68, 129,150.03 and 41,690.40

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Solution

The fourth proportional to 86,161.68, 129,150.03 and 41,690.40 is: 62,490.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,161.68 : 129,150.03 = 41,690.40 : x
  2. Step 2: Convert to fraction form
    86,161.68/129,150.03 = 41,690.40/x
  3. Step 3: Cross multiply
    86,161.68x = 129,150.03 × 41,690.40
  4. Step 4: Simplify right side
    86,161.68x = 5,384,316,410.71
  5. Step 5: Solve for x
    x = 5,384,316,410.71/86,161.68
  6. Step 6: Final answer
    x = 62,490.85

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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.