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Finding the Fourth Proportional to 65,459.80, 98,189.70 and 16,211.80

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Solution

The fourth proportional to 65,459.80, 98,189.70 and 16,211.80 is: 24,317.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,459.80 : 98,189.70 = 16,211.80 : x
  2. Step 2: Convert to fraction form
    65,459.80/98,189.70 = 16,211.80/x
  3. Step 3: Cross multiply
    65,459.80x = 98,189.70 × 16,211.80
  4. Step 4: Simplify right side
    65,459.80x = 1,591,831,778.46
  5. Step 5: Solve for x
    x = 1,591,831,778.46/65,459.80
  6. Step 6: Final answer
    x = 24,317.70

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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.