Home / 79,287.12-109,399.68-53,813.16

Finding the Fourth Proportional to 79,287.12, 109,399.68 and 53,813.16

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Solution

The fourth proportional to 79,287.12, 109,399.68 and 53,813.16 is: 74,250.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,287.12 : 109,399.68 = 53,813.16 : x
  2. Step 2: Convert to fraction form
    79,287.12/109,399.68 = 53,813.16/x
  3. Step 3: Cross multiply
    79,287.12x = 109,399.68 × 53,813.16
  4. Step 4: Simplify right side
    79,287.12x = 5,887,142,483.79
  5. Step 5: Solve for x
    x = 5,887,142,483.79/79,287.12
  6. Step 6: Final answer
    x = 74,250.93

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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.