Home / 79,619.97-119,430.05-20,456.13

Finding the Fourth Proportional to 79,619.97, 119,430.05 and 20,456.13

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Solution

The fourth proportional to 79,619.97, 119,430.05 and 20,456.13 is: 30,684.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,619.97 : 119,430.05 = 20,456.13 : x
  2. Step 2: Convert to fraction form
    79,619.97/119,430.05 = 20,456.13/x
  3. Step 3: Cross multiply
    79,619.97x = 119,430.05 × 20,456.13
  4. Step 4: Simplify right side
    79,619.97x = 2,443,076,526.43
  5. Step 5: Solve for x
    x = 2,443,076,526.43/79,619.97
  6. Step 6: Final answer
    x = 30,684.22

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1.5x scale

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.