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Finding the Fourth Proportional to 59,781.60, 89,669.34 and 20,339.46

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Solution

The fourth proportional to 59,781.60, 89,669.34 and 20,339.46 is: 30,508.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,781.60 : 89,669.34 = 20,339.46 : x
  2. Step 2: Convert to fraction form
    59,781.60/89,669.34 = 20,339.46/x
  3. Step 3: Cross multiply
    59,781.60x = 89,669.34 × 20,339.46
  4. Step 4: Simplify right side
    59,781.60x = 1,823,825,954.16
  5. Step 5: Solve for x
    x = 1,823,825,954.16/59,781.60
  6. Step 6: Final answer
    x = 30,508.15

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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.