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Finding the Fourth Proportional to 59,787.81, 89,687.78 and 20,347.69

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Solution

The fourth proportional to 59,787.81, 89,687.78 and 20,347.69 is: 30,523.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,787.81 : 89,687.78 = 20,347.69 : x
  2. Step 2: Convert to fraction form
    59,787.81/89,687.78 = 20,347.69/x
  3. Step 3: Cross multiply
    59,787.81x = 89,687.78 × 20,347.69
  4. Step 4: Simplify right side
    59,787.81x = 1,824,939,144.23
  5. Step 5: Solve for x
    x = 1,824,939,144.23/59,787.81
  6. Step 6: Final answer
    x = 30,523.60

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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.