Home / 81,092.20-121,346.70-54,848.20

Finding the Fourth Proportional to 81,092.20, 121,346.70 and 54,848.20

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Solution

The fourth proportional to 81,092.20, 121,346.70 and 54,848.20 is: 82,075.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,092.20 : 121,346.70 = 54,848.20 : x
  2. Step 2: Convert to fraction form
    81,092.20/121,346.70 = 54,848.20/x
  3. Step 3: Cross multiply
    81,092.20x = 121,346.70 × 54,848.20
  4. Step 4: Simplify right side
    81,092.20x = 6,655,648,070.94
  5. Step 5: Solve for x
    x = 6,655,648,070.94/81,092.20
  6. Step 6: Final answer
    x = 82,075.07

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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.