Home / 65,680.20-98,520.30-30,688.20

Finding the Fourth Proportional to 65,680.20, 98,520.30 and 30,688.20

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Solution

The fourth proportional to 65,680.20, 98,520.30 and 30,688.20 is: 46,032.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,680.20 : 98,520.30 = 30,688.20 : x
  2. Step 2: Convert to fraction form
    65,680.20/98,520.30 = 30,688.20/x
  3. Step 3: Cross multiply
    65,680.20x = 98,520.30 × 30,688.20
  4. Step 4: Simplify right side
    65,680.20x = 3,023,410,670.46
  5. Step 5: Solve for x
    x = 3,023,410,670.46/65,680.20
  6. Step 6: Final answer
    x = 46,032.30

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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.