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Finding the Fourth Proportional to 43,290.40, 64,903.20 and 23,591.20

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Solution

The fourth proportional to 43,290.40, 64,903.20 and 23,591.20 is: 35,369.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,290.40 : 64,903.20 = 23,591.20 : x
  2. Step 2: Convert to fraction form
    43,290.40/64,903.20 = 23,591.20/x
  3. Step 3: Cross multiply
    43,290.40x = 64,903.20 × 23,591.20
  4. Step 4: Simplify right side
    43,290.40x = 1,531,144,371.84
  5. Step 5: Solve for x
    x = 1,531,144,371.84/43,290.40
  6. Step 6: Final answer
    x = 35,369.14

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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.