Home / 85,317.20-127,975.80-57,323.60

Finding the Fourth Proportional to 85,317.20, 127,975.80 and 57,323.60

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Solution

The fourth proportional to 85,317.20, 127,975.80 and 57,323.60 is: 85,985.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,317.20 : 127,975.80 = 57,323.60 : x
  2. Step 2: Convert to fraction form
    85,317.20/127,975.80 = 57,323.60/x
  3. Step 3: Cross multiply
    85,317.20x = 127,975.80 × 57,323.60
  4. Step 4: Simplify right side
    85,317.20x = 7,336,033,568.88
  5. Step 5: Solve for x
    x = 7,336,033,568.88/85,317.20
  6. Step 6: Final answer
    x = 85,985.40

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Similar ratio
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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.