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Finding the Fourth Proportional to 58,718.34, 80,989.08 and 40,575.42

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Solution

The fourth proportional to 58,718.34, 80,989.08 and 40,575.42 is: 55,964.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,718.34 : 80,989.08 = 40,575.42 : x
  2. Step 2: Convert to fraction form
    58,718.34/80,989.08 = 40,575.42/x
  3. Step 3: Cross multiply
    58,718.34x = 80,989.08 × 40,575.42
  4. Step 4: Simplify right side
    58,718.34x = 3,286,165,936.41
  5. Step 5: Solve for x
    x = 3,286,165,936.41/58,718.34
  6. Step 6: Final answer
    x = 55,964.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.