Home / 89,386.90-134,129.60-54,351.16

Finding the Fourth Proportional to 89,386.90, 134,129.60 and 54,351.16

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Solution

The fourth proportional to 89,386.90, 134,129.60 and 54,351.16 is: 81,556.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,386.90 : 134,129.60 = 54,351.16 : x
  2. Step 2: Convert to fraction form
    89,386.90/134,129.60 = 54,351.16/x
  3. Step 3: Cross multiply
    89,386.90x = 134,129.60 × 54,351.16
  4. Step 4: Simplify right side
    89,386.90x = 7,290,099,350.34
  5. Step 5: Solve for x
    x = 7,290,099,350.34/89,386.90
  6. Step 6: Final answer
    x = 81,556.69

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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.