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Finding the Fourth Proportional to 92,238.80, 138,401.40 and 47,915.60

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Solution

The fourth proportional to 92,238.80, 138,401.40 and 47,915.60 is: 71,895.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,238.80 : 138,401.40 = 47,915.60 : x
  2. Step 2: Convert to fraction form
    92,238.80/138,401.40 = 47,915.60/x
  3. Step 3: Cross multiply
    92,238.80x = 138,401.40 × 47,915.60
  4. Step 4: Simplify right side
    92,238.80x = 6,631,586,121.84
  5. Step 5: Solve for x
    x = 6,631,586,121.84/92,238.80
  6. Step 6: Final answer
    x = 71,895.84

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1.5x scale

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.