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Finding the Fourth Proportional to 89,213.74, 133,820.84 and 30,090.89

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Solution

The fourth proportional to 89,213.74, 133,820.84 and 30,090.89 is: 45,136.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,213.74 : 133,820.84 = 30,090.89 : x
  2. Step 2: Convert to fraction form
    89,213.74/133,820.84 = 30,090.89/x
  3. Step 3: Cross multiply
    89,213.74x = 133,820.84 × 30,090.89
  4. Step 4: Simplify right side
    89,213.74x = 4,026,788,585.93
  5. Step 5: Solve for x
    x = 4,026,788,585.93/89,213.74
  6. Step 6: Final answer
    x = 45,136.42

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1.5x scale

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.