Home / 65,507.09-98,272.85-21,129.21

Finding the Fourth Proportional to 65,507.09, 98,272.85 and 21,129.21

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Solution

The fourth proportional to 65,507.09, 98,272.85 and 21,129.21 is: 31,697.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,507.09 : 98,272.85 = 21,129.21 : x
  2. Step 2: Convert to fraction form
    65,507.09/98,272.85 = 21,129.21/x
  3. Step 3: Cross multiply
    65,507.09x = 98,272.85 × 21,129.21
  4. Step 4: Simplify right side
    65,507.09x = 2,076,427,579.30
  5. Step 5: Solve for x
    x = 2,076,427,579.30/65,507.09
  6. Step 6: Final answer
    x = 31,697.76

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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.