Home / 65,680.20-90,637.08-36,608.34

Finding the Fourth Proportional to 65,680.20, 90,637.08 and 36,608.34

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Solution

The fourth proportional to 65,680.20, 90,637.08 and 36,608.34 is: 50,518.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,680.20 : 90,637.08 = 36,608.34 : x
  2. Step 2: Convert to fraction form
    65,680.20/90,637.08 = 36,608.34/x
  3. Step 3: Cross multiply
    65,680.20x = 90,637.08 × 36,608.34
  4. Step 4: Simplify right side
    65,680.20x = 3,318,073,041.25
  5. Step 5: Solve for x
    x = 3,318,073,041.25/65,680.20
  6. Step 6: Final answer
    x = 50,518.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.