Home / 87,157.72-120,283.50-49,434.40

Finding the Fourth Proportional to 87,157.72, 120,283.50 and 49,434.40

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Solution

The fourth proportional to 87,157.72, 120,283.50 and 49,434.40 is: 68,222.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,157.72 : 120,283.50 = 49,434.40 : x
  2. Step 2: Convert to fraction form
    87,157.72/120,283.50 = 49,434.40/x
  3. Step 3: Cross multiply
    87,157.72x = 120,283.50 × 49,434.40
  4. Step 4: Simplify right side
    87,157.72x = 5,946,142,652.40
  5. Step 5: Solve for x
    x = 5,946,142,652.40/87,157.72
  6. Step 6: Final answer
    x = 68,222.79

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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.