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Finding the Fourth Proportional to 75,394.70, 104,080.11 and 43,557.45

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Solution

The fourth proportional to 75,394.70, 104,080.11 and 43,557.45 is: 60,129.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,394.70 : 104,080.11 = 43,557.45 : x
  2. Step 2: Convert to fraction form
    75,394.70/104,080.11 = 43,557.45/x
  3. Step 3: Cross multiply
    75,394.70x = 104,080.11 × 43,557.45
  4. Step 4: Simplify right side
    75,394.70x = 4,533,463,633.68
  5. Step 5: Solve for x
    x = 4,533,463,633.68/75,394.70
  6. Step 6: Final answer
    x = 60,129.74

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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.