Home / 105,455.75-145,524.26-57,711.11

Finding the Fourth Proportional to 105,455.75, 145,524.26 and 57,711.11

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Solution

The fourth proportional to 105,455.75, 145,524.26 and 57,711.11 is: 79,638.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,455.75 : 145,524.26 = 57,711.11 : x
  2. Step 2: Convert to fraction form
    105,455.75/145,524.26 = 57,711.11/x
  3. Step 3: Cross multiply
    105,455.75x = 145,524.26 × 57,711.11
  4. Step 4: Simplify right side
    105,455.75x = 8,398,366,576.53
  5. Step 5: Solve for x
    x = 8,398,366,576.53/105,455.75
  6. Step 6: Final answer
    x = 79,638.77

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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.