Home / 45,785.85-68,678.08-12,505.86

Finding the Fourth Proportional to 45,785.85, 68,678.08 and 12,505.86

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Solution

The fourth proportional to 45,785.85, 68,678.08 and 12,505.86 is: 18,758.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,785.85 : 68,678.08 = 12,505.86 : x
  2. Step 2: Convert to fraction form
    45,785.85/68,678.08 = 12,505.86/x
  3. Step 3: Cross multiply
    45,785.85x = 68,678.08 × 12,505.86
  4. Step 4: Simplify right side
    45,785.85x = 858,878,453.55
  5. Step 5: Solve for x
    x = 858,878,453.55/45,785.85
  6. Step 6: Final answer
    x = 18,758.60

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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.