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Finding the Fourth Proportional to 79,297.65, 109,442.75 and 45,313.29

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Solution

The fourth proportional to 79,297.65, 109,442.75 and 45,313.29 is: 62,539.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,297.65 : 109,442.75 = 45,313.29 : x
  2. Step 2: Convert to fraction form
    79,297.65/109,442.75 = 45,313.29/x
  3. Step 3: Cross multiply
    79,297.65x = 109,442.75 × 45,313.29
  4. Step 4: Simplify right side
    79,297.65x = 4,959,210,842.58
  5. Step 5: Solve for x
    x = 4,959,210,842.58/79,297.65
  6. Step 6: Final answer
    x = 62,539.19

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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.