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Finding the Fourth Proportional to 58,376, 80,558.88 and 31,880

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Solution

The fourth proportional to 58,376, 80,558.88 and 31,880 is: 43,994.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,376 : 80,558.88 = 31,880 : x
  2. Step 2: Convert to fraction form
    58,376/80,558.88 = 31,880/x
  3. Step 3: Cross multiply
    58,376x = 80,558.88 × 31,880
  4. Step 4: Simplify right side
    58,376x = 2,568,217,094.40
  5. Step 5: Solve for x
    x = 2,568,217,094.40/58,376
  6. Step 6: Final answer
    x = 43,994.40

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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.