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Finding the Fourth Proportional to 65,991.30, 90,995.79 and 49,027.02

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Solution

The fourth proportional to 65,991.30, 90,995.79 and 49,027.02 is: 67,603.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,991.30 : 90,995.79 = 49,027.02 : x
  2. Step 2: Convert to fraction form
    65,991.30/90,995.79 = 49,027.02/x
  3. Step 3: Cross multiply
    65,991.30x = 90,995.79 × 49,027.02
  4. Step 4: Simplify right side
    65,991.30x = 4,461,252,416.25
  5. Step 5: Solve for x
    x = 4,461,252,416.25/65,991.30
  6. Step 6: Final answer
    x = 67,603.64

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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.