Home / 81,845.82-112,999.14-56,047.55

Finding the Fourth Proportional to 81,845.82, 112,999.14 and 56,047.55

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Solution

The fourth proportional to 81,845.82, 112,999.14 and 56,047.55 is: 77,381.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,845.82 : 112,999.14 = 56,047.55 : x
  2. Step 2: Convert to fraction form
    81,845.82/112,999.14 = 56,047.55/x
  3. Step 3: Cross multiply
    81,845.82x = 112,999.14 × 56,047.55
  4. Step 4: Simplify right side
    81,845.82x = 6,333,324,384.11
  5. Step 5: Solve for x
    x = 6,333,324,384.11/81,845.82
  6. Step 6: Final answer
    x = 77,381.16

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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.