Home / 65,478.16-98,232.96-21,109.12

Finding the Fourth Proportional to 65,478.16, 98,232.96 and 21,109.12

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Solution

The fourth proportional to 65,478.16, 98,232.96 and 21,109.12 is: 31,668.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,478.16 : 98,232.96 = 21,109.12 : x
  2. Step 2: Convert to fraction form
    65,478.16/98,232.96 = 21,109.12/x
  3. Step 3: Cross multiply
    65,478.16x = 98,232.96 × 21,109.12
  4. Step 4: Simplify right side
    65,478.16x = 2,073,611,340.60
  5. Step 5: Solve for x
    x = 2,073,611,340.60/65,478.16
  6. Step 6: Final answer
    x = 31,668.75

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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.