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Finding the Fourth Proportional to 43,580.81, 65,371.26 and 30,458.81

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Solution

The fourth proportional to 43,580.81, 65,371.26 and 30,458.81 is: 45,688.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,580.81 : 65,371.26 = 30,458.81 : x
  2. Step 2: Convert to fraction form
    43,580.81/65,371.26 = 30,458.81/x
  3. Step 3: Cross multiply
    43,580.81x = 65,371.26 × 30,458.81
  4. Step 4: Simplify right side
    43,580.81x = 1,991,130,635.51
  5. Step 5: Solve for x
    x = 1,991,130,635.51/43,580.81
  6. Step 6: Final answer
    x = 45,688.24

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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.