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Finding the Fourth Proportional to 59,873.70, 89,813.31 and 20,431.20

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Solution

The fourth proportional to 59,873.70, 89,813.31 and 20,431.20 is: 30,647.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,873.70 : 89,813.31 = 20,431.20 : x
  2. Step 2: Convert to fraction form
    59,873.70/89,813.31 = 20,431.20/x
  3. Step 3: Cross multiply
    59,873.70x = 89,813.31 × 20,431.20
  4. Step 4: Simplify right side
    59,873.70x = 1,834,993,699.27
  5. Step 5: Solve for x
    x = 1,834,993,699.27/59,873.70
  6. Step 6: Final answer
    x = 30,647.74

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1.5x scale

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.