Home / 86,553.15-129,887.91-30,393.69

Finding the Fourth Proportional to 86,553.15, 129,887.91 and 30,393.69

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Solution

The fourth proportional to 86,553.15, 129,887.91 and 30,393.69 is: 45,610.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,553.15 : 129,887.91 = 30,393.69 : x
  2. Step 2: Convert to fraction form
    86,553.15/129,887.91 = 30,393.69/x
  3. Step 3: Cross multiply
    86,553.15x = 129,887.91 × 30,393.69
  4. Step 4: Simplify right side
    86,553.15x = 3,947,772,871.29
  5. Step 5: Solve for x
    x = 3,947,772,871.29/86,553.15
  6. Step 6: Final answer
    x = 45,610.97

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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.