Home / 86,712.38-130,066.70-39,965.25

Finding the Fourth Proportional to 86,712.38, 130,066.70 and 39,965.25

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Solution

The fourth proportional to 86,712.38, 130,066.70 and 39,965.25 is: 59,947.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,712.38 : 130,066.70 = 39,965.25 : x
  2. Step 2: Convert to fraction form
    86,712.38/130,066.70 = 39,965.25/x
  3. Step 3: Cross multiply
    86,712.38x = 130,066.70 × 39,965.25
  4. Step 4: Simplify right side
    86,712.38x = 5,198,147,982.35
  5. Step 5: Solve for x
    x = 5,198,147,982.35/86,712.38
  6. Step 6: Final answer
    x = 59,947.01

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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.