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Finding the Fourth Proportional to 76,154.39, 105,093.05 and 42,620.39

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Solution

The fourth proportional to 76,154.39, 105,093.05 and 42,620.39 is: 58,816.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,154.39 : 105,093.05 = 42,620.39 : x
  2. Step 2: Convert to fraction form
    76,154.39/105,093.05 = 42,620.39/x
  3. Step 3: Cross multiply
    76,154.39x = 105,093.05 × 42,620.39
  4. Step 4: Simplify right side
    76,154.39x = 4,479,106,564.19
  5. Step 5: Solve for x
    x = 4,479,106,564.19/76,154.39
  6. Step 6: Final answer
    x = 58,816.13

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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.