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Finding the Fourth Proportional to 65,912.40, 98,674.20 and 43,750.80

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Solution

The fourth proportional to 65,912.40, 98,674.20 and 43,750.80 is: 65,497.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,912.40 : 98,674.20 = 43,750.80 : x
  2. Step 2: Convert to fraction form
    65,912.40/98,674.20 = 43,750.80/x
  3. Step 3: Cross multiply
    65,912.40x = 98,674.20 × 43,750.80
  4. Step 4: Simplify right side
    65,912.40x = 4,317,075,189.36
  5. Step 5: Solve for x
    x = 4,317,075,189.36/65,912.40
  6. Step 6: Final answer
    x = 65,497.16

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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.