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Finding the Fourth Proportional to 92,807, 128,073.75 and 50,365.54

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Solution

The fourth proportional to 92,807, 128,073.75 and 50,365.54 is: 69,504.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,807 : 128,073.75 = 50,365.54 : x
  2. Step 2: Convert to fraction form
    92,807/128,073.75 = 50,365.54/x
  3. Step 3: Cross multiply
    92,807x = 128,073.75 × 50,365.54
  4. Step 4: Simplify right side
    92,807x = 6,450,503,578.58
  5. Step 5: Solve for x
    x = 6,450,503,578.58/92,807
  6. Step 6: Final answer
    x = 69,504.49

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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.