Home / 85,139.84-127,730.44-25,976.56

Finding the Fourth Proportional to 85,139.84, 127,730.44 and 25,976.56

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Solution

The fourth proportional to 85,139.84, 127,730.44 and 25,976.56 is: 38,971.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,139.84 : 127,730.44 = 25,976.56 : x
  2. Step 2: Convert to fraction form
    85,139.84/127,730.44 = 25,976.56/x
  3. Step 3: Cross multiply
    85,139.84x = 127,730.44 × 25,976.56
  4. Step 4: Simplify right side
    85,139.84x = 3,317,997,438.49
  5. Step 5: Solve for x
    x = 3,317,997,438.49/85,139.84
  6. Step 6: Final answer
    x = 38,971.15

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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.