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Finding the Fourth Proportional to 65,020.44, 97,520.68 and 20,641.40

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Solution

The fourth proportional to 65,020.44, 97,520.68 and 20,641.40 is: 30,958.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,020.44 : 97,520.68 = 20,641.40 : x
  2. Step 2: Convert to fraction form
    65,020.44/97,520.68 = 20,641.40/x
  3. Step 3: Cross multiply
    65,020.44x = 97,520.68 × 20,641.40
  4. Step 4: Simplify right side
    65,020.44x = 2,012,963,364.15
  5. Step 5: Solve for x
    x = 2,012,963,364.15/65,020.44
  6. Step 6: Final answer
    x = 30,958.93

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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.