Home / 72,511.34-100,066.62-54,329.80

Finding the Fourth Proportional to 72,511.34, 100,066.62 and 54,329.80

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Solution

The fourth proportional to 72,511.34, 100,066.62 and 54,329.80 is: 74,975.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,511.34 : 100,066.62 = 54,329.80 : x
  2. Step 2: Convert to fraction form
    72,511.34/100,066.62 = 54,329.80/x
  3. Step 3: Cross multiply
    72,511.34x = 100,066.62 × 54,329.80
  4. Step 4: Simplify right side
    72,511.34x = 5,436,599,451.28
  5. Step 5: Solve for x
    x = 5,436,599,451.28/72,511.34
  6. Step 6: Final answer
    x = 74,975.85

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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.