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Finding the Fourth Proportional to 72,852.58, 109,279.05 and 20,262.07

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Solution

The fourth proportional to 72,852.58, 109,279.05 and 20,262.07 is: 30,393.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,852.58 : 109,279.05 = 20,262.07 : x
  2. Step 2: Convert to fraction form
    72,852.58/109,279.05 = 20,262.07/x
  3. Step 3: Cross multiply
    72,852.58x = 109,279.05 × 20,262.07
  4. Step 4: Simplify right side
    72,852.58x = 2,214,219,760.63
  5. Step 5: Solve for x
    x = 2,214,219,760.63/72,852.58
  6. Step 6: Final answer
    x = 30,393.16

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1.5x scale

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.