Home / 86,972.90-120,081.08-54,317.06

Finding the Fourth Proportional to 86,972.90, 120,081.08 and 54,317.06

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Solution

The fourth proportional to 86,972.90, 120,081.08 and 54,317.06 is: 74,994.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,972.90 : 120,081.08 = 54,317.06 : x
  2. Step 2: Convert to fraction form
    86,972.90/120,081.08 = 54,317.06/x
  3. Step 3: Cross multiply
    86,972.90x = 120,081.08 × 54,317.06
  4. Step 4: Simplify right side
    86,972.90x = 6,522,450,355.23
  5. Step 5: Solve for x
    x = 6,522,450,355.23/86,972.90
  6. Step 6: Final answer
    x = 74,994.06

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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.