Home / 72,513.36-100,069.38-54,331.80

Finding the Fourth Proportional to 72,513.36, 100,069.38 and 54,331.80

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Solution

The fourth proportional to 72,513.36, 100,069.38 and 54,331.80 is: 74,978.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,513.36 : 100,069.38 = 54,331.80 : x
  2. Step 2: Convert to fraction form
    72,513.36/100,069.38 = 54,331.80/x
  3. Step 3: Cross multiply
    72,513.36x = 100,069.38 × 54,331.80
  4. Step 4: Simplify right side
    72,513.36x = 5,436,949,540.28
  5. Step 5: Solve for x
    x = 5,436,949,540.28/72,513.36
  6. Step 6: Final answer
    x = 74,978.59

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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.