Home / 81,073.11-111,848.67-54,173.01

Finding the Fourth Proportional to 81,073.11, 111,848.67 and 54,173.01

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Solution

The fourth proportional to 81,073.11, 111,848.67 and 54,173.01 is: 74,737.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,073.11 : 111,848.67 = 54,173.01 : x
  2. Step 2: Convert to fraction form
    81,073.11/111,848.67 = 54,173.01/x
  3. Step 3: Cross multiply
    81,073.11x = 111,848.67 × 54,173.01
  4. Step 4: Simplify right side
    81,073.11x = 6,059,179,118.40
  5. Step 5: Solve for x
    x = 6,059,179,118.40/81,073.11
  6. Step 6: Final answer
    x = 74,737.22

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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.