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Finding the Fourth Proportional to 54,658.64, 75,270.11 and 47,485.28

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Solution

The fourth proportional to 54,658.64, 75,270.11 and 47,485.28 is: 65,391.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,658.64 : 75,270.11 = 47,485.28 : x
  2. Step 2: Convert to fraction form
    54,658.64/75,270.11 = 47,485.28/x
  3. Step 3: Cross multiply
    54,658.64x = 75,270.11 × 47,485.28
  4. Step 4: Simplify right side
    54,658.64x = 3,574,222,555.87
  5. Step 5: Solve for x
    x = 3,574,222,555.87/54,658.64
  6. Step 6: Final answer
    x = 65,391.72

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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.