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Finding the Fourth Proportional to 65,686.94, 98,544.24 and 21,310.24

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Solution

The fourth proportional to 65,686.94, 98,544.24 and 21,310.24 is: 31,969.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,686.94 : 98,544.24 = 21,310.24 : x
  2. Step 2: Convert to fraction form
    65,686.94/98,544.24 = 21,310.24/x
  3. Step 3: Cross multiply
    65,686.94x = 98,544.24 × 21,310.24
  4. Step 4: Simplify right side
    65,686.94x = 2,100,001,405.02
  5. Step 5: Solve for x
    x = 2,100,001,405.02/65,686.94
  6. Step 6: Final answer
    x = 31,969.85

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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.