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Finding the Fourth Proportional to 59,872.65, 89,808.96 and 20,429.76

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Solution

The fourth proportional to 59,872.65, 89,808.96 and 20,429.76 is: 30,644.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,872.65 : 89,808.96 = 20,429.76 : x
  2. Step 2: Convert to fraction form
    59,872.65/89,808.96 = 20,429.76/x
  3. Step 3: Cross multiply
    59,872.65x = 89,808.96 × 20,429.76
  4. Step 4: Simplify right side
    59,872.65x = 1,834,775,498.65
  5. Step 5: Solve for x
    x = 1,834,775,498.65/59,872.65
  6. Step 6: Final answer
    x = 30,644.63

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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.