Home / 80,870.25-111,599.45-45,059.49

Finding the Fourth Proportional to 80,870.25, 111,599.45 and 45,059.49

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Solution

The fourth proportional to 80,870.25, 111,599.45 and 45,059.49 is: 62,181.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,870.25 : 111,599.45 = 45,059.49 : x
  2. Step 2: Convert to fraction form
    80,870.25/111,599.45 = 45,059.49/x
  3. Step 3: Cross multiply
    80,870.25x = 111,599.45 × 45,059.49
  4. Step 4: Simplify right side
    80,870.25x = 5,028,613,743.28
  5. Step 5: Solve for x
    x = 5,028,613,743.28/80,870.25
  6. Step 6: Final answer
    x = 62,181.26

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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.