Home / 87,457.66-120,670.16-49,209.75

Finding the Fourth Proportional to 87,457.66, 120,670.16 and 49,209.75

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Solution

The fourth proportional to 87,457.66, 120,670.16 and 49,209.75 is: 67,897.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,457.66 : 120,670.16 = 49,209.75 : x
  2. Step 2: Convert to fraction form
    87,457.66/120,670.16 = 49,209.75/x
  3. Step 3: Cross multiply
    87,457.66x = 120,670.16 × 49,209.75
  4. Step 4: Simplify right side
    87,457.66x = 5,938,148,160.01
  5. Step 5: Solve for x
    x = 5,938,148,160.01/87,457.66
  6. Step 6: Final answer
    x = 67,897.41

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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.