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Finding the Fourth Proportional to 99,803.52, 149,726.81 and 28,725.68

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Solution

The fourth proportional to 99,803.52, 149,726.81 and 28,725.68 is: 43,094.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,803.52 : 149,726.81 = 28,725.68 : x
  2. Step 2: Convert to fraction form
    99,803.52/149,726.81 = 28,725.68/x
  3. Step 3: Cross multiply
    99,803.52x = 149,726.81 × 28,725.68
  4. Step 4: Simplify right side
    99,803.52x = 4,301,003,539.22
  5. Step 5: Solve for x
    x = 4,301,003,539.22/99,803.52
  6. Step 6: Final answer
    x = 43,094.71

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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.