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Finding the Fourth Proportional to 65,772.77, 98,682.08 and 20,801.07

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Solution

The fourth proportional to 65,772.77, 98,682.08 and 20,801.07 is: 31,208.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,772.77 : 98,682.08 = 20,801.07 : x
  2. Step 2: Convert to fraction form
    65,772.77/98,682.08 = 20,801.07/x
  3. Step 3: Cross multiply
    65,772.77x = 98,682.08 × 20,801.07
  4. Step 4: Simplify right side
    65,772.77x = 2,052,692,749.82
  5. Step 5: Solve for x
    x = 2,052,692,749.82/65,772.77
  6. Step 6: Final answer
    x = 31,208.86

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1.5x scale

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.