Home / 85,033.40-127,563.60-28,878.80

Finding the Fourth Proportional to 85,033.40, 127,563.60 and 28,878.80

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Solution

The fourth proportional to 85,033.40, 127,563.60 and 28,878.80 is: 43,322.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,033.40 : 127,563.60 = 28,878.80 : x
  2. Step 2: Convert to fraction form
    85,033.40/127,563.60 = 28,878.80/x
  3. Step 3: Cross multiply
    85,033.40x = 127,563.60 × 28,878.80
  4. Step 4: Simplify right side
    85,033.40x = 3,683,883,691.68
  5. Step 5: Solve for x
    x = 3,683,883,691.68/85,033.40
  6. Step 6: Final answer
    x = 43,322.78

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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.