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Finding the Fourth Proportional to 63,138.94, 87,128.98 and 34,457.88

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Solution

The fourth proportional to 63,138.94, 87,128.98 and 34,457.88 is: 47,550.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,138.94 : 87,128.98 = 34,457.88 : x
  2. Step 2: Convert to fraction form
    63,138.94/87,128.98 = 34,457.88/x
  3. Step 3: Cross multiply
    63,138.94x = 87,128.98 × 34,457.88
  4. Step 4: Simplify right side
    63,138.94x = 3,002,279,937.36
  5. Step 5: Solve for x
    x = 3,002,279,937.36/63,138.94
  6. Step 6: Final answer
    x = 47,550.37

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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.