Home / 75,129.37-103,678.30-43,298.20

Finding the Fourth Proportional to 75,129.37, 103,678.30 and 43,298.20

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Solution

The fourth proportional to 75,129.37, 103,678.30 and 43,298.20 is: 59,751.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,129.37 : 103,678.30 = 43,298.20 : x
  2. Step 2: Convert to fraction form
    75,129.37/103,678.30 = 43,298.20/x
  3. Step 3: Cross multiply
    75,129.37x = 103,678.30 × 43,298.20
  4. Step 4: Simplify right side
    75,129.37x = 4,489,083,769.06
  5. Step 5: Solve for x
    x = 4,489,083,769.06/75,129.37
  6. Step 6: Final answer
    x = 59,751.38

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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.