Home / 81,825.55-112,917.30-53,530.63

Finding the Fourth Proportional to 81,825.55, 112,917.30 and 53,530.63

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Solution

The fourth proportional to 81,825.55, 112,917.30 and 53,530.63 is: 73,870.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,825.55 : 112,917.30 = 53,530.63 : x
  2. Step 2: Convert to fraction form
    81,825.55/112,917.30 = 53,530.63/x
  3. Step 3: Cross multiply
    81,825.55x = 112,917.30 × 53,530.63
  4. Step 4: Simplify right side
    81,825.55x = 6,044,534,206.90
  5. Step 5: Solve for x
    x = 6,044,534,206.90/81,825.55
  6. Step 6: Final answer
    x = 73,870.99

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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.