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Finding the Fourth Proportional to 71,551.60, 107,328.36 and 21,632.08

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Solution

The fourth proportional to 71,551.60, 107,328.36 and 21,632.08 is: 32,448.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,551.60 : 107,328.36 = 21,632.08 : x
  2. Step 2: Convert to fraction form
    71,551.60/107,328.36 = 21,632.08/x
  3. Step 3: Cross multiply
    71,551.60x = 107,328.36 × 21,632.08
  4. Step 4: Simplify right side
    71,551.60x = 2,321,735,669.79
  5. Step 5: Solve for x
    x = 2,321,735,669.79/71,551.60
  6. Step 6: Final answer
    x = 32,448.41

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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.