Home / 79,021.08-109,048.38-45,030.96

Finding the Fourth Proportional to 79,021.08, 109,048.38 and 45,030.96

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Solution

The fourth proportional to 79,021.08, 109,048.38 and 45,030.96 is: 62,142.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,021.08 : 109,048.38 = 45,030.96 : x
  2. Step 2: Convert to fraction form
    79,021.08/109,048.38 = 45,030.96/x
  3. Step 3: Cross multiply
    79,021.08x = 109,048.38 × 45,030.96
  4. Step 4: Simplify right side
    79,021.08x = 4,910,553,237.84
  5. Step 5: Solve for x
    x = 4,910,553,237.84/79,021.08
  6. Step 6: Final answer
    x = 62,142.32

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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.