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Finding the Fourth Proportional to 65,272.60, 97,908.90 and 20,900.80

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Solution

The fourth proportional to 65,272.60, 97,908.90 and 20,900.80 is: 31,351.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,272.60 : 97,908.90 = 20,900.80 : x
  2. Step 2: Convert to fraction form
    65,272.60/97,908.90 = 20,900.80/x
  3. Step 3: Cross multiply
    65,272.60x = 97,908.90 × 20,900.80
  4. Step 4: Simplify right side
    65,272.60x = 2,046,374,337.12
  5. Step 5: Solve for x
    x = 2,046,374,337.12/65,272.60
  6. Step 6: Final answer
    x = 31,351.20

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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.