Home / 81,489.25-112,454.48-45,679.15

Finding the Fourth Proportional to 81,489.25, 112,454.48 and 45,679.15

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Solution

The fourth proportional to 81,489.25, 112,454.48 and 45,679.15 is: 63,036.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,489.25 : 112,454.48 = 45,679.15 : x
  2. Step 2: Convert to fraction form
    81,489.25/112,454.48 = 45,679.15/x
  3. Step 3: Cross multiply
    81,489.25x = 112,454.48 × 45,679.15
  4. Step 4: Simplify right side
    81,489.25x = 5,136,824,269.42
  5. Step 5: Solve for x
    x = 5,136,824,269.42/81,489.25
  6. Step 6: Final answer
    x = 63,036.84

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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.