Home / 84,680.70-127,021.27-28,560.23

Finding the Fourth Proportional to 84,680.70, 127,021.27 and 28,560.23

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Solution

The fourth proportional to 84,680.70, 127,021.27 and 28,560.23 is: 42,840.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,680.70 : 127,021.27 = 28,560.23 : x
  2. Step 2: Convert to fraction form
    84,680.70/127,021.27 = 28,560.23/x
  3. Step 3: Cross multiply
    84,680.70x = 127,021.27 × 28,560.23
  4. Step 4: Simplify right side
    84,680.70x = 3,627,756,686.09
  5. Step 5: Solve for x
    x = 3,627,756,686.09/84,680.70
  6. Step 6: Final answer
    x = 42,840.42

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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.