Home / 65,579.60-98,369.16-28,115.36

Finding the Fourth Proportional to 65,579.60, 98,369.16 and 28,115.36

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Solution

The fourth proportional to 65,579.60, 98,369.16 and 28,115.36 is: 42,172.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,579.60 : 98,369.16 = 28,115.36 : x
  2. Step 2: Convert to fraction form
    65,579.60/98,369.16 = 28,115.36/x
  3. Step 3: Cross multiply
    65,579.60x = 98,369.16 × 28,115.36
  4. Step 4: Simplify right side
    65,579.60x = 2,765,684,346.30
  5. Step 5: Solve for x
    x = 2,765,684,346.30/65,579.60
  6. Step 6: Final answer
    x = 42,172.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.