Home / 87,921.08-131,881.30-48,457.40

Finding the Fourth Proportional to 87,921.08, 131,881.30 and 48,457.40

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Solution

The fourth proportional to 87,921.08, 131,881.30 and 48,457.40 is: 72,685.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,921.08 : 131,881.30 = 48,457.40 : x
  2. Step 2: Convert to fraction form
    87,921.08/131,881.30 = 48,457.40/x
  3. Step 3: Cross multiply
    87,921.08x = 131,881.30 × 48,457.40
  4. Step 4: Simplify right side
    87,921.08x = 6,390,624,906.62
  5. Step 5: Solve for x
    x = 6,390,624,906.62/87,921.08
  6. Step 6: Final answer
    x = 72,685.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.