Home / 87,315.79-120,505.78-48,557.48

Finding the Fourth Proportional to 87,315.79, 120,505.78 and 48,557.48

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Solution

The fourth proportional to 87,315.79, 120,505.78 and 48,557.48 is: 67,014.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,315.79 : 120,505.78 = 48,557.48 : x
  2. Step 2: Convert to fraction form
    87,315.79/120,505.78 = 48,557.48/x
  3. Step 3: Cross multiply
    87,315.79x = 120,505.78 × 48,557.48
  4. Step 4: Simplify right side
    87,315.79x = 5,851,457,002.23
  5. Step 5: Solve for x
    x = 5,851,457,002.23/87,315.79
  6. Step 6: Final answer
    x = 67,014.88

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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.