Home / 85,077.57-127,628.03-28,902.60

Finding the Fourth Proportional to 85,077.57, 127,628.03 and 28,902.60

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Solution

The fourth proportional to 85,077.57, 127,628.03 and 28,902.60 is: 43,357.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,077.57 : 127,628.03 = 28,902.60 : x
  2. Step 2: Convert to fraction form
    85,077.57/127,628.03 = 28,902.60/x
  3. Step 3: Cross multiply
    85,077.57x = 127,628.03 × 28,902.60
  4. Step 4: Simplify right side
    85,077.57x = 3,688,781,899.88
  5. Step 5: Solve for x
    x = 3,688,781,899.88/85,077.57
  6. Step 6: Final answer
    x = 43,357.87

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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.