Home / 85,618.08-118,143.63-49,809.60

Finding the Fourth Proportional to 85,618.08, 118,143.63 and 49,809.60

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Solution

The fourth proportional to 85,618.08, 118,143.63 and 49,809.60 is: 68,731.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,618.08 : 118,143.63 = 49,809.60 : x
  2. Step 2: Convert to fraction form
    85,618.08/118,143.63 = 49,809.60/x
  3. Step 3: Cross multiply
    85,618.08x = 118,143.63 × 49,809.60
  4. Step 4: Simplify right side
    85,618.08x = 5,884,686,952.85
  5. Step 5: Solve for x
    x = 5,884,686,952.85/85,618.08
  6. Step 6: Final answer
    x = 68,731.83

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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.