Home / 86,419.09-129,628.64-27,259.38

Finding the Fourth Proportional to 86,419.09, 129,628.64 and 27,259.38

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Solution

The fourth proportional to 86,419.09, 129,628.64 and 27,259.38 is: 40,889.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,419.09 : 129,628.64 = 27,259.38 : x
  2. Step 2: Convert to fraction form
    86,419.09/129,628.64 = 27,259.38/x
  3. Step 3: Cross multiply
    86,419.09x = 129,628.64 × 27,259.38
  4. Step 4: Simplify right side
    86,419.09x = 3,533,596,356.64
  5. Step 5: Solve for x
    x = 3,533,596,356.64/86,419.09
  6. Step 6: Final answer
    x = 40,889.07

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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.