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Finding the Fourth Proportional to 52,867.92, 79,300.32 and 21,268.20

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Solution

The fourth proportional to 52,867.92, 79,300.32 and 21,268.20 is: 31,901.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,867.92 : 79,300.32 = 21,268.20 : x
  2. Step 2: Convert to fraction form
    52,867.92/79,300.32 = 21,268.20/x
  3. Step 3: Cross multiply
    52,867.92x = 79,300.32 × 21,268.20
  4. Step 4: Simplify right side
    52,867.92x = 1,686,575,065.82
  5. Step 5: Solve for x
    x = 1,686,575,065.82/52,867.92
  6. Step 6: Final answer
    x = 31,901.67

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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.