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Finding the Fourth Proportional to 55,437.87, 83,118.85 and 19,898.40

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Solution

The fourth proportional to 55,437.87, 83,118.85 and 19,898.40 is: 29,833.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,437.87 : 83,118.85 = 19,898.40 : x
  2. Step 2: Convert to fraction form
    55,437.87/83,118.85 = 19,898.40/x
  3. Step 3: Cross multiply
    55,437.87x = 83,118.85 × 19,898.40
  4. Step 4: Simplify right side
    55,437.87x = 1,653,932,124.84
  5. Step 5: Solve for x
    x = 1,653,932,124.84/55,437.87
  6. Step 6: Final answer
    x = 29,833.98

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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.