Home / 65,388.87-90,235.35-36,709.20

Finding the Fourth Proportional to 65,388.87, 90,235.35 and 36,709.20

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Solution

The fourth proportional to 65,388.87, 90,235.35 and 36,709.20 is: 50,657.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,388.87 : 90,235.35 = 36,709.20 : x
  2. Step 2: Convert to fraction form
    65,388.87/90,235.35 = 36,709.20/x
  3. Step 3: Cross multiply
    65,388.87x = 90,235.35 × 36,709.20
  4. Step 4: Simplify right side
    65,388.87x = 3,312,467,510.22
  5. Step 5: Solve for x
    x = 3,312,467,510.22/65,388.87
  6. Step 6: Final answer
    x = 50,657.97

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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.