Home / 66,785.14-100,140.18-45,748.90

Finding the Fourth Proportional to 66,785.14, 100,140.18 and 45,748.90

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Solution

The fourth proportional to 66,785.14, 100,140.18 and 45,748.90 is: 68,597.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,785.14 : 100,140.18 = 45,748.90 : x
  2. Step 2: Convert to fraction form
    66,785.14/100,140.18 = 45,748.90/x
  3. Step 3: Cross multiply
    66,785.14x = 100,140.18 × 45,748.90
  4. Step 4: Simplify right side
    66,785.14x = 4,581,303,080.80
  5. Step 5: Solve for x
    x = 4,581,303,080.80/66,785.14
  6. Step 6: Final answer
    x = 68,597.64

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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.