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Finding the Fourth Proportional to 54,751.20, 76,807.20 and 54,751.20

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Solution

The fourth proportional to 54,751.20, 76,807.20 and 54,751.20 is: 76,807.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,751.20 : 76,807.20 = 54,751.20 : x
  2. Step 2: Convert to fraction form
    54,751.20/76,807.20 = 54,751.20/x
  3. Step 3: Cross multiply
    54,751.20x = 76,807.20 × 54,751.20
  4. Step 4: Simplify right side
    54,751.20x = 4,205,286,368.64
  5. Step 5: Solve for x
    x = 4,205,286,368.64/54,751.20
  6. Step 6: Final answer
    x = 76,807.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.