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Finding the Fourth Proportional to 65,809.96, 98,725.25 and 28,380.67

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Solution

The fourth proportional to 65,809.96, 98,725.25 and 28,380.67 is: 42,575.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,809.96 : 98,725.25 = 28,380.67 : x
  2. Step 2: Convert to fraction form
    65,809.96/98,725.25 = 28,380.67/x
  3. Step 3: Cross multiply
    65,809.96x = 98,725.25 × 28,380.67
  4. Step 4: Simplify right side
    65,809.96x = 2,801,888,740.92
  5. Step 5: Solve for x
    x = 2,801,888,740.92/65,809.96
  6. Step 6: Final answer
    x = 42,575.45

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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.