Home / 105,705.27-145,872.21-57,958.50

Finding the Fourth Proportional to 105,705.27, 145,872.21 and 57,958.50

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Solution

The fourth proportional to 105,705.27, 145,872.21 and 57,958.50 is: 79,982.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,705.27 : 145,872.21 = 57,958.50 : x
  2. Step 2: Convert to fraction form
    105,705.27/145,872.21 = 57,958.50/x
  3. Step 3: Cross multiply
    105,705.27x = 145,872.21 × 57,958.50
  4. Step 4: Simplify right side
    105,705.27x = 8,454,534,483.29
  5. Step 5: Solve for x
    x = 8,454,534,483.29/105,705.27
  6. Step 6: Final answer
    x = 79,982.15

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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.