Home / 105,717.12-145,882.50-57,969.45

Finding the Fourth Proportional to 105,717.12, 145,882.50 and 57,969.45

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Solution

The fourth proportional to 105,717.12, 145,882.50 and 57,969.45 is: 79,993.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,717.12 : 145,882.50 = 57,969.45 : x
  2. Step 2: Convert to fraction form
    105,717.12/145,882.50 = 57,969.45/x
  3. Step 3: Cross multiply
    105,717.12x = 145,882.50 × 57,969.45
  4. Step 4: Simplify right side
    105,717.12x = 8,456,728,289.63
  5. Step 5: Solve for x
    x = 8,456,728,289.63/105,717.12
  6. Step 6: Final answer
    x = 79,993.93

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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.