Home / 89,343.40-133,820.70-54,221.80

Finding the Fourth Proportional to 89,343.40, 133,820.70 and 54,221.80

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Solution

The fourth proportional to 89,343.40, 133,820.70 and 54,221.80 is: 81,214.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,343.40 : 133,820.70 = 54,221.80 : x
  2. Step 2: Convert to fraction form
    89,343.40/133,820.70 = 54,221.80/x
  3. Step 3: Cross multiply
    89,343.40x = 133,820.70 × 54,221.80
  4. Step 4: Simplify right side
    89,343.40x = 7,255,999,231.26
  5. Step 5: Solve for x
    x = 7,255,999,231.26/89,343.40
  6. Step 6: Final answer
    x = 81,214.72

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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.