Home / 79,428.08-109,537.60-53,972.60

Finding the Fourth Proportional to 79,428.08, 109,537.60 and 53,972.60

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Solution

The fourth proportional to 79,428.08, 109,537.60 and 53,972.60 is: 74,432.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,428.08 : 109,537.60 = 53,972.60 : x
  2. Step 2: Convert to fraction form
    79,428.08/109,537.60 = 53,972.60/x
  3. Step 3: Cross multiply
    79,428.08x = 109,537.60 × 53,972.60
  4. Step 4: Simplify right side
    79,428.08x = 5,912,029,069.76
  5. Step 5: Solve for x
    x = 5,912,029,069.76/79,428.08
  6. Step 6: Final answer
    x = 74,432.48

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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.