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Finding the Fourth Proportional to 52,739.64, 79,109.52 and 19,445.28

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Solution

The fourth proportional to 52,739.64, 79,109.52 and 19,445.28 is: 29,167.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,739.64 : 79,109.52 = 19,445.28 : x
  2. Step 2: Convert to fraction form
    52,739.64/79,109.52 = 19,445.28/x
  3. Step 3: Cross multiply
    52,739.64x = 79,109.52 × 19,445.28
  4. Step 4: Simplify right side
    52,739.64x = 1,538,306,767.07
  5. Step 5: Solve for x
    x = 1,538,306,767.07/52,739.64
  6. Step 6: Final answer
    x = 29,167.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.