Home / 79,020.81-109,047.67-45,031.32

Finding the Fourth Proportional to 79,020.81, 109,047.67 and 45,031.32

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Solution

The fourth proportional to 79,020.81, 109,047.67 and 45,031.32 is: 62,142.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,020.81 : 109,047.67 = 45,031.32 : x
  2. Step 2: Convert to fraction form
    79,020.81/109,047.67 = 45,031.32/x
  3. Step 3: Cross multiply
    79,020.81x = 109,047.67 × 45,031.32
  4. Step 4: Simplify right side
    79,020.81x = 4,910,560,410.45
  5. Step 5: Solve for x
    x = 4,910,560,410.45/79,020.81
  6. Step 6: Final answer
    x = 62,142.62

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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.