Home / 86,391.07-129,600.50-30,229.93

Finding the Fourth Proportional to 86,391.07, 129,600.50 and 30,229.93

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Solution

The fourth proportional to 86,391.07, 129,600.50 and 30,229.93 is: 45,349.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,391.07 : 129,600.50 = 30,229.93 : x
  2. Step 2: Convert to fraction form
    86,391.07/129,600.50 = 30,229.93/x
  3. Step 3: Cross multiply
    86,391.07x = 129,600.50 × 30,229.93
  4. Step 4: Simplify right side
    86,391.07x = 3,917,813,243.81
  5. Step 5: Solve for x
    x = 3,917,813,243.81/86,391.07
  6. Step 6: Final answer
    x = 45,349.75

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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.