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Finding the Fourth Proportional to 65,028.60, 97,542.39 and 20,658.81

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Solution

The fourth proportional to 65,028.60, 97,542.39 and 20,658.81 is: 30,988.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,028.60 : 97,542.39 = 20,658.81 : x
  2. Step 2: Convert to fraction form
    65,028.60/97,542.39 = 20,658.81/x
  3. Step 3: Cross multiply
    65,028.60x = 97,542.39 × 20,658.81
  4. Step 4: Simplify right side
    65,028.60x = 2,015,109,701.96
  5. Step 5: Solve for x
    x = 2,015,109,701.96/65,028.60
  6. Step 6: Final answer
    x = 30,988.05

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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.