Home / 105,568.91-145,680.28-57,821.23

Finding the Fourth Proportional to 105,568.91, 145,680.28 and 57,821.23

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Solution

The fourth proportional to 105,568.91, 145,680.28 and 57,821.23 is: 79,790.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,568.91 : 145,680.28 = 57,821.23 : x
  2. Step 2: Convert to fraction form
    105,568.91/145,680.28 = 57,821.23/x
  3. Step 3: Cross multiply
    105,568.91x = 145,680.28 × 57,821.23
  4. Step 4: Simplify right side
    105,568.91x = 8,423,412,976.34
  5. Step 5: Solve for x
    x = 8,423,412,976.34/105,568.91
  6. Step 6: Final answer
    x = 79,790.66

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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.