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Finding the Fourth Proportional to 52,619, 72,619.22 and 28,749.27

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Solution

The fourth proportional to 52,619, 72,619.22 and 28,749.27 is: 39,676.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,619 : 72,619.22 = 28,749.27 : x
  2. Step 2: Convert to fraction form
    52,619/72,619.22 = 28,749.27/x
  3. Step 3: Cross multiply
    52,619x = 72,619.22 × 28,749.27
  4. Step 4: Simplify right side
    52,619x = 2,087,749,419.22
  5. Step 5: Solve for x
    x = 2,087,749,419.22/52,619
  6. Step 6: Final answer
    x = 39,676.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.