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Finding the Fourth Proportional to 72,907.14, 100,611.84 and 39,373.14

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Solution

The fourth proportional to 72,907.14, 100,611.84 and 39,373.14 is: 54,334.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,907.14 : 100,611.84 = 39,373.14 : x
  2. Step 2: Convert to fraction form
    72,907.14/100,611.84 = 39,373.14/x
  3. Step 3: Cross multiply
    72,907.14x = 100,611.84 × 39,373.14
  4. Step 4: Simplify right side
    72,907.14x = 3,961,404,061.98
  5. Step 5: Solve for x
    x = 3,961,404,061.98/72,907.14
  6. Step 6: Final answer
    x = 54,334.93

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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.