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Finding the Fourth Proportional to 43,809.20, 65,713.80 and 29,812.40

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Solution

The fourth proportional to 43,809.20, 65,713.80 and 29,812.40 is: 44,718.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,809.20 : 65,713.80 = 29,812.40 : x
  2. Step 2: Convert to fraction form
    43,809.20/65,713.80 = 29,812.40/x
  3. Step 3: Cross multiply
    43,809.20x = 65,713.80 × 29,812.40
  4. Step 4: Simplify right side
    43,809.20x = 1,959,086,091.12
  5. Step 5: Solve for x
    x = 1,959,086,091.12/43,809.20
  6. Step 6: Final answer
    x = 44,718.60

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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.