Home / 105,631.96-145,772.22-57,885.42

Finding the Fourth Proportional to 105,631.96, 145,772.22 and 57,885.42

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Solution

The fourth proportional to 105,631.96, 145,772.22 and 57,885.42 is: 79,881.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,631.96 : 145,772.22 = 57,885.42 : x
  2. Step 2: Convert to fraction form
    105,631.96/145,772.22 = 57,885.42/x
  3. Step 3: Cross multiply
    105,631.96x = 145,772.22 × 57,885.42
  4. Step 4: Simplify right side
    105,631.96x = 8,438,086,179.03
  5. Step 5: Solve for x
    x = 8,438,086,179.03/105,631.96
  6. Step 6: Final answer
    x = 79,881.94

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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.