Home / 86,909.10-130,273.76-49,388.38

Finding the Fourth Proportional to 86,909.10, 130,273.76 and 49,388.38

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Solution

The fourth proportional to 86,909.10, 130,273.76 and 49,388.38 is: 74,031.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,909.10 : 130,273.76 = 49,388.38 : x
  2. Step 2: Convert to fraction form
    86,909.10/130,273.76 = 49,388.38/x
  3. Step 3: Cross multiply
    86,909.10x = 130,273.76 × 49,388.38
  4. Step 4: Simplify right side
    86,909.10x = 6,434,009,760.70
  5. Step 5: Solve for x
    x = 6,434,009,760.70/86,909.10
  6. Step 6: Final answer
    x = 74,031.49

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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.