Home / 105,617.70-145,752.21-57,872.58

Finding the Fourth Proportional to 105,617.70, 145,752.21 and 57,872.58

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Solution

The fourth proportional to 105,617.70, 145,752.21 and 57,872.58 is: 79,864.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,617.70 : 145,752.21 = 57,872.58 : x
  2. Step 2: Convert to fraction form
    105,617.70/145,752.21 = 57,872.58/x
  3. Step 3: Cross multiply
    105,617.70x = 145,752.21 × 57,872.58
  4. Step 4: Simplify right side
    105,617.70x = 8,435,056,433.40
  5. Step 5: Solve for x
    x = 8,435,056,433.40/105,617.70
  6. Step 6: Final answer
    x = 79,864.04

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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.