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Finding the Fourth Proportional to 72,637.44, 108,890.40 and 50,461.20

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Solution

The fourth proportional to 72,637.44, 108,890.40 and 50,461.20 is: 75,646.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,637.44 : 108,890.40 = 50,461.20 : x
  2. Step 2: Convert to fraction form
    72,637.44/108,890.40 = 50,461.20/x
  3. Step 3: Cross multiply
    72,637.44x = 108,890.40 × 50,461.20
  4. Step 4: Simplify right side
    72,637.44x = 5,494,740,252.48
  5. Step 5: Solve for x
    x = 5,494,740,252.48/72,637.44
  6. Step 6: Final answer
    x = 75,646.12

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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.