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Finding the Fourth Proportional to 43,803.81, 65,784.95 and 40,287.51

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Solution

The fourth proportional to 43,803.81, 65,784.95 and 40,287.51 is: 60,504.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,803.81 : 65,784.95 = 40,287.51 : x
  2. Step 2: Convert to fraction form
    43,803.81/65,784.95 = 40,287.51/x
  3. Step 3: Cross multiply
    43,803.81x = 65,784.95 × 40,287.51
  4. Step 4: Simplify right side
    43,803.81x = 2,650,311,629.54
  5. Step 5: Solve for x
    x = 2,650,311,629.54/43,803.81
  6. Step 6: Final answer
    x = 60,504.13

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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.