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Finding the Fourth Proportional to 43,506.30, 65,259.45 and 20,178.30

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Solution

The fourth proportional to 43,506.30, 65,259.45 and 20,178.30 is: 30,267.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,506.30 : 65,259.45 = 20,178.30 : x
  2. Step 2: Convert to fraction form
    43,506.30/65,259.45 = 20,178.30/x
  3. Step 3: Cross multiply
    43,506.30x = 65,259.45 × 20,178.30
  4. Step 4: Simplify right side
    43,506.30x = 1,316,824,759.94
  5. Step 5: Solve for x
    x = 1,316,824,759.94/43,506.30
  6. Step 6: Final answer
    x = 30,267.45

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Similar ratio
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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.