Home / 84,813.18-127,219.77-28,653.54

Finding the Fourth Proportional to 84,813.18, 127,219.77 and 28,653.54

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Solution

The fourth proportional to 84,813.18, 127,219.77 and 28,653.54 is: 42,980.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,813.18 : 127,219.77 = 28,653.54 : x
  2. Step 2: Convert to fraction form
    84,813.18/127,219.77 = 28,653.54/x
  3. Step 3: Cross multiply
    84,813.18x = 127,219.77 × 28,653.54
  4. Step 4: Simplify right side
    84,813.18x = 3,645,296,768.49
  5. Step 5: Solve for x
    x = 3,645,296,768.49/84,813.18
  6. Step 6: Final answer
    x = 42,980.31

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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.