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Finding the Fourth Proportional to 92,842.91, 128,123.20 and 50,401.44

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Solution

The fourth proportional to 92,842.91, 128,123.20 and 50,401.44 is: 69,553.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,842.91 : 128,123.20 = 50,401.44 : x
  2. Step 2: Convert to fraction form
    92,842.91/128,123.20 = 50,401.44/x
  3. Step 3: Cross multiply
    92,842.91x = 128,123.20 × 50,401.44
  4. Step 4: Simplify right side
    92,842.91x = 6,457,593,136.79
  5. Step 5: Solve for x
    x = 6,457,593,136.79/92,842.91
  6. Step 6: Final answer
    x = 69,553.98

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1.5x scale

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.