Home / 65,880.12-90,914.61-35,665.70

Finding the Fourth Proportional to 65,880.12, 90,914.61 and 35,665.70

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Solution

The fourth proportional to 65,880.12, 90,914.61 and 35,665.70 is: 49,218.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,880.12 : 90,914.61 = 35,665.70 : x
  2. Step 2: Convert to fraction form
    65,880.12/90,914.61 = 35,665.70/x
  3. Step 3: Cross multiply
    65,880.12x = 90,914.61 × 35,665.70
  4. Step 4: Simplify right side
    65,880.12x = 3,242,532,751.30
  5. Step 5: Solve for x
    x = 3,242,532,751.30/65,880.12
  6. Step 6: Final answer
    x = 49,218.68

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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.