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Finding the Fourth Proportional to 72,900.87, 100,603.20 and 41,069.76

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Solution

The fourth proportional to 72,900.87, 100,603.20 and 41,069.76 is: 56,676.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,900.87 : 100,603.20 = 41,069.76 : x
  2. Step 2: Convert to fraction form
    72,900.87/100,603.20 = 41,069.76/x
  3. Step 3: Cross multiply
    72,900.87x = 100,603.20 × 41,069.76
  4. Step 4: Simplify right side
    72,900.87x = 4,131,749,279.23
  5. Step 5: Solve for x
    x = 4,131,749,279.23/72,900.87
  6. Step 6: Final answer
    x = 56,676.27

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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.