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Finding the Fourth Proportional to 99,722.68, 149,582.87 and 28,647.06

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Solution

The fourth proportional to 99,722.68, 149,582.87 and 28,647.06 is: 42,970.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,722.68 : 149,582.87 = 28,647.06 : x
  2. Step 2: Convert to fraction form
    99,722.68/149,582.87 = 28,647.06/x
  3. Step 3: Cross multiply
    99,722.68x = 149,582.87 × 28,647.06
  4. Step 4: Simplify right side
    99,722.68x = 4,285,109,523.48
  5. Step 5: Solve for x
    x = 4,285,109,523.48/99,722.68
  6. Step 6: Final answer
    x = 42,970.26

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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.