Home / 105,708.50-145,882.14-57,963.68

Finding the Fourth Proportional to 105,708.50, 145,882.14 and 57,963.68

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Solution

The fourth proportional to 105,708.50, 145,882.14 and 57,963.68 is: 79,992.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,708.50 : 145,882.14 = 57,963.68 : x
  2. Step 2: Convert to fraction form
    105,708.50/145,882.14 = 57,963.68/x
  3. Step 3: Cross multiply
    105,708.50x = 145,882.14 × 57,963.68
  4. Step 4: Simplify right side
    105,708.50x = 8,455,865,680.68
  5. Step 5: Solve for x
    x = 8,455,865,680.68/105,708.50
  6. Step 6: Final answer
    x = 79,992.30

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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.