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Finding the Fourth Proportional to 75,089, 103,645.92 and 43,279.10

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Solution

The fourth proportional to 75,089, 103,645.92 and 43,279.10 is: 59,738.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,089 : 103,645.92 = 43,279.10 : x
  2. Step 2: Convert to fraction form
    75,089/103,645.92 = 43,279.10/x
  3. Step 3: Cross multiply
    75,089x = 103,645.92 × 43,279.10
  4. Step 4: Simplify right side
    75,089x = 4,485,702,136.27
  5. Step 5: Solve for x
    x = 4,485,702,136.27/75,089
  6. Step 6: Final answer
    x = 59,738.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.