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Finding the Fourth Proportional to 65,572.80, 98,245.80 and 30,440.40

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Solution

The fourth proportional to 65,572.80, 98,245.80 and 30,440.40 is: 45,607.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,572.80 : 98,245.80 = 30,440.40 : x
  2. Step 2: Convert to fraction form
    65,572.80/98,245.80 = 30,440.40/x
  3. Step 3: Cross multiply
    65,572.80x = 98,245.80 × 30,440.40
  4. Step 4: Simplify right side
    65,572.80x = 2,990,641,450.32
  5. Step 5: Solve for x
    x = 2,990,641,450.32/65,572.80
  6. Step 6: Final answer
    x = 45,607.96

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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.