Home / 78,945.84-108,904.68-53,453.16

Finding the Fourth Proportional to 78,945.84, 108,904.68 and 53,453.16

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Solution

The fourth proportional to 78,945.84, 108,904.68 and 53,453.16 is: 73,737.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,945.84 : 108,904.68 = 53,453.16 : x
  2. Step 2: Convert to fraction form
    78,945.84/108,904.68 = 53,453.16/x
  3. Step 3: Cross multiply
    78,945.84x = 108,904.68 × 53,453.16
  4. Step 4: Simplify right side
    78,945.84x = 5,821,299,284.79
  5. Step 5: Solve for x
    x = 5,821,299,284.79/78,945.84
  6. Step 6: Final answer
    x = 73,737.89

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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.