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Finding the Fourth Proportional to 73,010.54, 109,561.88 and 28,636.11

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Solution

The fourth proportional to 73,010.54, 109,561.88 and 28,636.11 is: 42,972.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,010.54 : 109,561.88 = 28,636.11 : x
  2. Step 2: Convert to fraction form
    73,010.54/109,561.88 = 28,636.11/x
  3. Step 3: Cross multiply
    73,010.54x = 109,561.88 × 28,636.11
  4. Step 4: Simplify right side
    73,010.54x = 3,137,426,047.49
  5. Step 5: Solve for x
    x = 3,137,426,047.49/73,010.54
  6. Step 6: Final answer
    x = 42,972.23

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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.