Home / 86,090.25-129,148.70-43,947.47

Finding the Fourth Proportional to 86,090.25, 129,148.70 and 43,947.47

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Solution

The fourth proportional to 86,090.25, 129,148.70 and 43,947.47 is: 65,928.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,090.25 : 129,148.70 = 43,947.47 : x
  2. Step 2: Convert to fraction form
    86,090.25/129,148.70 = 43,947.47/x
  3. Step 3: Cross multiply
    86,090.25x = 129,148.70 × 43,947.47
  4. Step 4: Simplify right side
    86,090.25x = 5,675,758,721.92
  5. Step 5: Solve for x
    x = 5,675,758,721.92/86,090.25
  6. Step 6: Final answer
    x = 65,928.01

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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.