Home / 72,852.72-109,279.02-26,138.40

Finding the Fourth Proportional to 72,852.72, 109,279.02 and 26,138.40

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Solution

The fourth proportional to 72,852.72, 109,279.02 and 26,138.40 is: 39,207.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,852.72 : 109,279.02 = 26,138.40 : x
  2. Step 2: Convert to fraction form
    72,852.72/109,279.02 = 26,138.40/x
  3. Step 3: Cross multiply
    72,852.72x = 109,279.02 × 26,138.40
  4. Step 4: Simplify right side
    72,852.72x = 2,856,378,736.37
  5. Step 5: Solve for x
    x = 2,856,378,736.37/72,852.72
  6. Step 6: Final answer
    x = 39,207.58

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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.