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Finding the Fourth Proportional to 57,598.61, 86,384.95 and 20,662.61

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Solution

The fourth proportional to 57,598.61, 86,384.95 and 20,662.61 is: 30,989.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,598.61 : 86,384.95 = 20,662.61 : x
  2. Step 2: Convert to fraction form
    57,598.61/86,384.95 = 20,662.61/x
  3. Step 3: Cross multiply
    57,598.61x = 86,384.95 × 20,662.61
  4. Step 4: Simplify right side
    57,598.61x = 1,784,938,048.14
  5. Step 5: Solve for x
    x = 1,784,938,048.14/57,598.61
  6. Step 6: Final answer
    x = 30,989.26

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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.