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Finding the Fourth Proportional to 92,808, 128,075.13 and 50,366.54

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Solution

The fourth proportional to 92,808, 128,075.13 and 50,366.54 is: 69,505.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,808 : 128,075.13 = 50,366.54 : x
  2. Step 2: Convert to fraction form
    92,808/128,075.13 = 50,366.54/x
  3. Step 3: Cross multiply
    92,808x = 128,075.13 × 50,366.54
  4. Step 4: Simplify right side
    92,808x = 6,450,701,158.15
  5. Step 5: Solve for x
    x = 6,450,701,158.15/92,808
  6. Step 6: Final answer
    x = 69,505.87

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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.