Home / 85,142.07-117,478.08-49,329.90

Finding the Fourth Proportional to 85,142.07, 117,478.08 and 49,329.90

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Solution

The fourth proportional to 85,142.07, 117,478.08 and 49,329.90 is: 68,064.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,142.07 : 117,478.08 = 49,329.90 : x
  2. Step 2: Convert to fraction form
    85,142.07/117,478.08 = 49,329.90/x
  3. Step 3: Cross multiply
    85,142.07x = 117,478.08 × 49,329.90
  4. Step 4: Simplify right side
    85,142.07x = 5,795,181,938.59
  5. Step 5: Solve for x
    x = 5,795,181,938.59/85,142.07
  6. Step 6: Final answer
    x = 68,064.85

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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.