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Finding the Fourth Proportional to 66,904.40, 100,271.55 and 27,416.90

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Solution

The fourth proportional to 66,904.40, 100,271.55 and 27,416.90 is: 41,090.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,904.40 : 100,271.55 = 27,416.90 : x
  2. Step 2: Convert to fraction form
    66,904.40/100,271.55 = 27,416.90/x
  3. Step 3: Cross multiply
    66,904.40x = 100,271.55 × 27,416.90
  4. Step 4: Simplify right side
    66,904.40x = 2,749,135,059.20
  5. Step 5: Solve for x
    x = 2,749,135,059.20/66,904.40
  6. Step 6: Final answer
    x = 41,090.50

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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.