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Finding the Fourth Proportional to 76,752.48, 115,128.96 and 21,348.48

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Solution

The fourth proportional to 76,752.48, 115,128.96 and 21,348.48 is: 32,022.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,752.48 : 115,128.96 = 21,348.48 : x
  2. Step 2: Convert to fraction form
    76,752.48/115,128.96 = 21,348.48/x
  3. Step 3: Cross multiply
    76,752.48x = 115,128.96 × 21,348.48
  4. Step 4: Simplify right side
    76,752.48x = 2,457,828,299.98
  5. Step 5: Solve for x
    x = 2,457,828,299.98/76,752.48
  6. Step 6: Final answer
    x = 32,022.79

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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.