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Finding the Fourth Proportional to 75,411.86, 104,042.85 and 43,123.46

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Solution

The fourth proportional to 75,411.86, 104,042.85 and 43,123.46 is: 59,495.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,411.86 : 104,042.85 = 43,123.46 : x
  2. Step 2: Convert to fraction form
    75,411.86/104,042.85 = 43,123.46/x
  3. Step 3: Cross multiply
    75,411.86x = 104,042.85 × 43,123.46
  4. Step 4: Simplify right side
    75,411.86x = 4,486,687,160.05
  5. Step 5: Solve for x
    x = 4,486,687,160.05/75,411.86
  6. Step 6: Final answer
    x = 59,495.78

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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.