Home / 75,129.48-103,678.02-43,297.68

Finding the Fourth Proportional to 75,129.48, 103,678.02 and 43,297.68

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Solution

The fourth proportional to 75,129.48, 103,678.02 and 43,297.68 is: 59,750.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,129.48 : 103,678.02 = 43,297.68 : x
  2. Step 2: Convert to fraction form
    75,129.48/103,678.02 = 43,297.68/x
  3. Step 3: Cross multiply
    75,129.48x = 103,678.02 × 43,297.68
  4. Step 4: Simplify right side
    75,129.48x = 4,489,017,732.99
  5. Step 5: Solve for x
    x = 4,489,017,732.99/75,129.48
  6. Step 6: Final answer
    x = 59,750.42

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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.