Home / 53,109.51-79,638.35-18,903.89

Finding the Fourth Proportional to 53,109.51, 79,638.35 and 18,903.89

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Solution

The fourth proportional to 53,109.51, 79,638.35 and 18,903.89 is: 28,346.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,109.51 : 79,638.35 = 18,903.89 : x
  2. Step 2: Convert to fraction form
    53,109.51/79,638.35 = 18,903.89/x
  3. Step 3: Cross multiply
    53,109.51x = 79,638.35 × 18,903.89
  4. Step 4: Simplify right side
    53,109.51x = 1,505,474,115.47
  5. Step 5: Solve for x
    x = 1,505,474,115.47/53,109.51
  6. Step 6: Final answer
    x = 28,346.60

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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.