Home / 84,947.45-127,421.57-25,783.63

Finding the Fourth Proportional to 84,947.45, 127,421.57 and 25,783.63

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Solution

The fourth proportional to 84,947.45, 127,421.57 and 25,783.63 is: 38,675.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,947.45 : 127,421.57 = 25,783.63 : x
  2. Step 2: Convert to fraction form
    84,947.45/127,421.57 = 25,783.63/x
  3. Step 3: Cross multiply
    84,947.45x = 127,421.57 × 25,783.63
  4. Step 4: Simplify right side
    84,947.45x = 3,285,389,977.79
  5. Step 5: Solve for x
    x = 3,285,389,977.79/84,947.45
  6. Step 6: Final answer
    x = 38,675.56

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Double scale
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Similar ratio
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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.