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Finding the Fourth Proportional to 65,116.20, 97,679.70 and 20,741.70

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Solution

The fourth proportional to 65,116.20, 97,679.70 and 20,741.70 is: 31,114.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,116.20 : 97,679.70 = 20,741.70 : x
  2. Step 2: Convert to fraction form
    65,116.20/97,679.70 = 20,741.70/x
  3. Step 3: Cross multiply
    65,116.20x = 97,679.70 × 20,741.70
  4. Step 4: Simplify right side
    65,116.20x = 2,026,043,033.49
  5. Step 5: Solve for x
    x = 2,026,043,033.49/65,116.20
  6. Step 6: Final answer
    x = 31,114.27

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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.