Home / 81,065.90-121,783.37-58,645.73

Finding the Fourth Proportional to 81,065.90, 121,783.37 and 58,645.73

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Solution

The fourth proportional to 81,065.90, 121,783.37 and 58,645.73 is: 88,102.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,065.90 : 121,783.37 = 58,645.73 : x
  2. Step 2: Convert to fraction form
    81,065.90/121,783.37 = 58,645.73/x
  3. Step 3: Cross multiply
    81,065.90x = 121,783.37 × 58,645.73
  4. Step 4: Simplify right side
    81,065.90x = 7,142,073,733.36
  5. Step 5: Solve for x
    x = 7,142,073,733.36/81,065.90
  6. Step 6: Final answer
    x = 88,102.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.