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Finding the Fourth Proportional to 65,724.40, 98,586.60 and 42,104.80

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Solution

The fourth proportional to 65,724.40, 98,586.60 and 42,104.80 is: 63,157.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,724.40 : 98,586.60 = 42,104.80 : x
  2. Step 2: Convert to fraction form
    65,724.40/98,586.60 = 42,104.80/x
  3. Step 3: Cross multiply
    65,724.40x = 98,586.60 × 42,104.80
  4. Step 4: Simplify right side
    65,724.40x = 4,150,969,075.68
  5. Step 5: Solve for x
    x = 4,150,969,075.68/65,724.40
  6. Step 6: Final answer
    x = 63,157.20

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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.