Home / 89,243.12-133,865.15-30,079.31

Finding the Fourth Proportional to 89,243.12, 133,865.15 and 30,079.31

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Solution

The fourth proportional to 89,243.12, 133,865.15 and 30,079.31 is: 45,119.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,243.12 : 133,865.15 = 30,079.31 : x
  2. Step 2: Convert to fraction form
    89,243.12/133,865.15 = 30,079.31/x
  3. Step 3: Cross multiply
    89,243.12x = 133,865.15 × 30,079.31
  4. Step 4: Simplify right side
    89,243.12x = 4,026,570,525.32
  5. Step 5: Solve for x
    x = 4,026,570,525.32/89,243.12
  6. Step 6: Final answer
    x = 45,119.11

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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.