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Finding the Fourth Proportional to 58,420, 80,619.60 and 33,271.84

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Solution

The fourth proportional to 58,420, 80,619.60 and 33,271.84 is: 45,915.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,420 : 80,619.60 = 33,271.84 : x
  2. Step 2: Convert to fraction form
    58,420/80,619.60 = 33,271.84/x
  3. Step 3: Cross multiply
    58,420x = 80,619.60 × 33,271.84
  4. Step 4: Simplify right side
    58,420x = 2,682,362,432.06
  5. Step 5: Solve for x
    x = 2,682,362,432.06/58,420
  6. Step 6: Final answer
    x = 45,915.14

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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.