Home / 87,211.78-120,353.08-49,483.06

Finding the Fourth Proportional to 87,211.78, 120,353.08 and 49,483.06

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Solution

The fourth proportional to 87,211.78, 120,353.08 and 49,483.06 is: 68,287.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,211.78 : 120,353.08 = 49,483.06 : x
  2. Step 2: Convert to fraction form
    87,211.78/120,353.08 = 49,483.06/x
  3. Step 3: Cross multiply
    87,211.78x = 120,353.08 × 49,483.06
  4. Step 4: Simplify right side
    87,211.78x = 5,955,438,254.23
  5. Step 5: Solve for x
    x = 5,955,438,254.23/87,211.78
  6. Step 6: Final answer
    x = 68,287.09

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1.5x scale

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.