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Finding the Fourth Proportional to 45,487.68, 68,218.56 and 28,822.56

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Solution

The fourth proportional to 45,487.68, 68,218.56 and 28,822.56 is: 43,225.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,487.68 : 68,218.56 = 28,822.56 : x
  2. Step 2: Convert to fraction form
    45,487.68/68,218.56 = 28,822.56/x
  3. Step 3: Cross multiply
    45,487.68x = 68,218.56 × 28,822.56
  4. Step 4: Simplify right side
    45,487.68x = 1,966,233,538.71
  5. Step 5: Solve for x
    x = 1,966,233,538.71/45,487.68
  6. Step 6: Final answer
    x = 43,225.63

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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.