Home / 105,527.70-145,628.19-57,781.02

Finding the Fourth Proportional to 105,527.70, 145,628.19 and 57,781.02

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Solution

The fourth proportional to 105,527.70, 145,628.19 and 57,781.02 is: 79,737.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,527.70 : 145,628.19 = 57,781.02 : x
  2. Step 2: Convert to fraction form
    105,527.70/145,628.19 = 57,781.02/x
  3. Step 3: Cross multiply
    105,527.70x = 145,628.19 × 57,781.02
  4. Step 4: Simplify right side
    105,527.70x = 8,414,545,358.95
  5. Step 5: Solve for x
    x = 8,414,545,358.95/105,527.70
  6. Step 6: Final answer
    x = 79,737.79

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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.