Home / 86,170.38-118,915.12-50,390.45

Finding the Fourth Proportional to 86,170.38, 118,915.12 and 50,390.45

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Solution

The fourth proportional to 86,170.38, 118,915.12 and 50,390.45 is: 69,538.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,170.38 : 118,915.12 = 50,390.45 : x
  2. Step 2: Convert to fraction form
    86,170.38/118,915.12 = 50,390.45/x
  3. Step 3: Cross multiply
    86,170.38x = 118,915.12 × 50,390.45
  4. Step 4: Simplify right side
    86,170.38x = 5,992,185,985.34
  5. Step 5: Solve for x
    x = 5,992,185,985.34/86,170.38
  6. Step 6: Final answer
    x = 69,538.82

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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.