Home / 81,208.08-112,069.62-45,399.60

Finding the Fourth Proportional to 81,208.08, 112,069.62 and 45,399.60

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Solution

The fourth proportional to 81,208.08, 112,069.62 and 45,399.60 is: 62,652.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,208.08 : 112,069.62 = 45,399.60 : x
  2. Step 2: Convert to fraction form
    81,208.08/112,069.62 = 45,399.60/x
  3. Step 3: Cross multiply
    81,208.08x = 112,069.62 × 45,399.60
  4. Step 4: Simplify right side
    81,208.08x = 5,087,915,920.15
  5. Step 5: Solve for x
    x = 5,087,915,920.15/81,208.08
  6. Step 6: Final answer
    x = 62,652.83

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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.