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Finding the Fourth Proportional to 76,120.70, 105,042.95 and 41,664.68

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Solution

The fourth proportional to 76,120.70, 105,042.95 and 41,664.68 is: 57,495.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,120.70 : 105,042.95 = 41,664.68 : x
  2. Step 2: Convert to fraction form
    76,120.70/105,042.95 = 41,664.68/x
  3. Step 3: Cross multiply
    76,120.70x = 105,042.95 × 41,664.68
  4. Step 4: Simplify right side
    76,120.70x = 4,376,580,476.95
  5. Step 5: Solve for x
    x = 4,376,580,476.95/76,120.70
  6. Step 6: Final answer
    x = 57,495.27

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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.