Home / 85,603.20-118,105.60-49,785.60

Finding the Fourth Proportional to 85,603.20, 118,105.60 and 49,785.60

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Solution

The fourth proportional to 85,603.20, 118,105.60 and 49,785.60 is: 68,688.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,603.20 : 118,105.60 = 49,785.60 : x
  2. Step 2: Convert to fraction form
    85,603.20/118,105.60 = 49,785.60/x
  3. Step 3: Cross multiply
    85,603.20x = 118,105.60 × 49,785.60
  4. Step 4: Simplify right side
    85,603.20x = 5,879,958,159.36
  5. Step 5: Solve for x
    x = 5,879,958,159.36/85,603.20
  6. Step 6: Final answer
    x = 68,688.53

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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.