Home / 87,310.96-120,457.50-57,113.48

Finding the Fourth Proportional to 87,310.96, 120,457.50 and 57,113.48

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Solution

The fourth proportional to 87,310.96, 120,457.50 and 57,113.48 is: 78,795.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,310.96 : 120,457.50 = 57,113.48 : x
  2. Step 2: Convert to fraction form
    87,310.96/120,457.50 = 57,113.48/x
  3. Step 3: Cross multiply
    87,310.96x = 120,457.50 × 57,113.48
  4. Step 4: Simplify right side
    87,310.96x = 6,879,747,017.10
  5. Step 5: Solve for x
    x = 6,879,747,017.10/87,310.96
  6. Step 6: Final answer
    x = 78,795.92

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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.