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Finding the Fourth Proportional to 56,503.92, 78,004.44 and 39,811.44

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Solution

The fourth proportional to 56,503.92, 78,004.44 and 39,811.44 is: 54,960.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,503.92 : 78,004.44 = 39,811.44 : x
  2. Step 2: Convert to fraction form
    56,503.92/78,004.44 = 39,811.44/x
  3. Step 3: Cross multiply
    56,503.92x = 78,004.44 × 39,811.44
  4. Step 4: Simplify right side
    56,503.92x = 3,105,469,082.79
  5. Step 5: Solve for x
    x = 3,105,469,082.79/56,503.92
  6. Step 6: Final answer
    x = 54,960.24

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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.