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Finding the Fourth Proportional to 66,029.60, 98,992.56 and 45,189.92

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Solution

The fourth proportional to 66,029.60, 98,992.56 and 45,189.92 is: 67,749.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,029.60 : 98,992.56 = 45,189.92 : x
  2. Step 2: Convert to fraction form
    66,029.60/98,992.56 = 45,189.92/x
  3. Step 3: Cross multiply
    66,029.60x = 98,992.56 × 45,189.92
  4. Step 4: Simplify right side
    66,029.60x = 4,473,465,867.00
  5. Step 5: Solve for x
    x = 4,473,465,867.00/66,029.60
  6. Step 6: Final answer
    x = 67,749.40

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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.