Home / 89,009.28-133,512-40,971.84

Finding the Fourth Proportional to 89,009.28, 133,512 and 40,971.84

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Solution

The fourth proportional to 89,009.28, 133,512 and 40,971.84 is: 61,456.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,009.28 : 133,512 = 40,971.84 : x
  2. Step 2: Convert to fraction form
    89,009.28/133,512 = 40,971.84/x
  3. Step 3: Cross multiply
    89,009.28x = 133,512 × 40,971.84
  4. Step 4: Simplify right side
    89,009.28x = 5,470,232,302.08
  5. Step 5: Solve for x
    x = 5,470,232,302.08/89,009.28
  6. Step 6: Final answer
    x = 61,456.88

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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.