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Finding the Fourth Proportional to 65,118.61, 97,676.89 and 20,745.06

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Solution

The fourth proportional to 65,118.61, 97,676.89 and 20,745.06 is: 31,117.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,118.61 : 97,676.89 = 20,745.06 : x
  2. Step 2: Convert to fraction form
    65,118.61/97,676.89 = 20,745.06/x
  3. Step 3: Cross multiply
    65,118.61x = 97,676.89 × 20,745.06
  4. Step 4: Simplify right side
    65,118.61x = 2,026,313,074.94
  5. Step 5: Solve for x
    x = 2,026,313,074.94/65,118.61
  6. Step 6: Final answer
    x = 31,117.27

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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.