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Finding the Fourth Proportional to 65,005.41, 97,520.22 and 20,620.20

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Solution

The fourth proportional to 65,005.41, 97,520.22 and 20,620.20 is: 30,934.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,005.41 : 97,520.22 = 20,620.20 : x
  2. Step 2: Convert to fraction form
    65,005.41/97,520.22 = 20,620.20/x
  3. Step 3: Cross multiply
    65,005.41x = 97,520.22 × 20,620.20
  4. Step 4: Simplify right side
    65,005.41x = 2,010,886,440.44
  5. Step 5: Solve for x
    x = 2,010,886,440.44/65,005.41
  6. Step 6: Final answer
    x = 30,934.14

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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.