Home / 81,788.82-112,860.80-47,805.28

Finding the Fourth Proportional to 81,788.82, 112,860.80 and 47,805.28

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Solution

The fourth proportional to 81,788.82, 112,860.80 and 47,805.28 is: 65,966.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,788.82 : 112,860.80 = 47,805.28 : x
  2. Step 2: Convert to fraction form
    81,788.82/112,860.80 = 47,805.28/x
  3. Step 3: Cross multiply
    81,788.82x = 112,860.80 × 47,805.28
  4. Step 4: Simplify right side
    81,788.82x = 5,395,342,145.02
  5. Step 5: Solve for x
    x = 5,395,342,145.02/81,788.82
  6. Step 6: Final answer
    x = 65,966.74

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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.