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Finding the Fourth Proportional to 89,843.40, 134,740.80 and 26,663.40

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Solution

The fourth proportional to 89,843.40, 134,740.80 and 26,663.40 is: 39,987.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,843.40 : 134,740.80 = 26,663.40 : x
  2. Step 2: Convert to fraction form
    89,843.40/134,740.80 = 26,663.40/x
  3. Step 3: Cross multiply
    89,843.40x = 134,740.80 × 26,663.40
  4. Step 4: Simplify right side
    89,843.40x = 3,592,647,846.72
  5. Step 5: Solve for x
    x = 3,592,647,846.72/89,843.40
  6. Step 6: Final answer
    x = 39,987.89

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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.