Home / 81,220.48-121,768.98-56,194

Finding the Fourth Proportional to 81,220.48, 121,768.98 and 56,194

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Solution

The fourth proportional to 81,220.48, 121,768.98 and 56,194 is: 84,248.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,220.48 : 121,768.98 = 56,194 : x
  2. Step 2: Convert to fraction form
    81,220.48/121,768.98 = 56,194/x
  3. Step 3: Cross multiply
    81,220.48x = 121,768.98 × 56,194
  4. Step 4: Simplify right side
    81,220.48x = 6,842,686,062.12
  5. Step 5: Solve for x
    x = 6,842,686,062.12/81,220.48
  6. Step 6: Final answer
    x = 84,248.28

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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.