Home / 105,686.13-145,846.26-57,939.87

Finding the Fourth Proportional to 105,686.13, 145,846.26 and 57,939.87

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Solution

The fourth proportional to 105,686.13, 145,846.26 and 57,939.87 is: 79,956.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,686.13 : 145,846.26 = 57,939.87 : x
  2. Step 2: Convert to fraction form
    105,686.13/145,846.26 = 57,939.87/x
  3. Step 3: Cross multiply
    105,686.13x = 145,846.26 × 57,939.87
  4. Step 4: Simplify right side
    105,686.13x = 8,450,313,344.39
  5. Step 5: Solve for x
    x = 8,450,313,344.39/105,686.13
  6. Step 6: Final answer
    x = 79,956.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.