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Finding the Fourth Proportional to 74,464.75, 111,160.99 and 63,820

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Solution

The fourth proportional to 74,464.75, 111,160.99 and 63,820 is: 95,270.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,464.75 : 111,160.99 = 63,820 : x
  2. Step 2: Convert to fraction form
    74,464.75/111,160.99 = 63,820/x
  3. Step 3: Cross multiply
    74,464.75x = 111,160.99 × 63,820
  4. Step 4: Simplify right side
    74,464.75x = 7,094,294,381.80
  5. Step 5: Solve for x
    x = 7,094,294,381.80/74,464.75
  6. Step 6: Final answer
    x = 95,270.51

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.