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Finding the Fourth Proportional to 52,697.67, 79,014.65 and 20,638.49

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Solution

The fourth proportional to 52,697.67, 79,014.65 and 20,638.49 is: 30,945.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,697.67 : 79,014.65 = 20,638.49 : x
  2. Step 2: Convert to fraction form
    52,697.67/79,014.65 = 20,638.49/x
  3. Step 3: Cross multiply
    52,697.67x = 79,014.65 × 20,638.49
  4. Step 4: Simplify right side
    52,697.67x = 1,630,742,565.61
  5. Step 5: Solve for x
    x = 1,630,742,565.61/52,697.67
  6. Step 6: Final answer
    x = 30,945.25

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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.