Home / 79,020.69-109,047.49-45,031.20

Finding the Fourth Proportional to 79,020.69, 109,047.49 and 45,031.20

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Solution

The fourth proportional to 79,020.69, 109,047.49 and 45,031.20 is: 62,142.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,020.69 : 109,047.49 = 45,031.20 : x
  2. Step 2: Convert to fraction form
    79,020.69/109,047.49 = 45,031.20/x
  3. Step 3: Cross multiply
    79,020.69x = 109,047.49 × 45,031.20
  4. Step 4: Simplify right side
    79,020.69x = 4,910,539,331.69
  5. Step 5: Solve for x
    x = 4,910,539,331.69/79,020.69
  6. Step 6: Final answer
    x = 62,142.45

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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.