Home / 99,921.69-149,956.45-47,331.29

Finding the Fourth Proportional to 99,921.69, 149,956.45 and 47,331.29

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Solution

The fourth proportional to 99,921.69, 149,956.45 and 47,331.29 is: 71,031.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,921.69 : 149,956.45 = 47,331.29 : x
  2. Step 2: Convert to fraction form
    99,921.69/149,956.45 = 47,331.29/x
  3. Step 3: Cross multiply
    99,921.69x = 149,956.45 × 47,331.29
  4. Step 4: Simplify right side
    99,921.69x = 7,097,632,478.88
  5. Step 5: Solve for x
    x = 7,097,632,478.88/99,921.69
  6. Step 6: Final answer
    x = 71,031.95

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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.