Home / 85,087.04-127,640.80-28,162.88

Finding the Fourth Proportional to 85,087.04, 127,640.80 and 28,162.88

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Solution

The fourth proportional to 85,087.04, 127,640.80 and 28,162.88 is: 42,247.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,087.04 : 127,640.80 = 28,162.88 : x
  2. Step 2: Convert to fraction form
    85,087.04/127,640.80 = 28,162.88/x
  3. Step 3: Cross multiply
    85,087.04x = 127,640.80 × 28,162.88
  4. Step 4: Simplify right side
    85,087.04x = 3,594,732,533.50
  5. Step 5: Solve for x
    x = 3,594,732,533.50/85,087.04
  6. Step 6: Final answer
    x = 42,247.71

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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.