Home / 86,535.36-129,757.80-39,109.68

Finding the Fourth Proportional to 86,535.36, 129,757.80 and 39,109.68

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Solution

The fourth proportional to 86,535.36, 129,757.80 and 39,109.68 is: 58,644.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,535.36 : 129,757.80 = 39,109.68 : x
  2. Step 2: Convert to fraction form
    86,535.36/129,757.80 = 39,109.68/x
  3. Step 3: Cross multiply
    86,535.36x = 129,757.80 × 39,109.68
  4. Step 4: Simplify right side
    86,535.36x = 5,074,786,035.50
  5. Step 5: Solve for x
    x = 5,074,786,035.50/86,535.36
  6. Step 6: Final answer
    x = 58,644.07

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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.