Home / 84,021.28-115,951.80-45,783.28

Finding the Fourth Proportional to 84,021.28, 115,951.80 and 45,783.28

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Solution

The fourth proportional to 84,021.28, 115,951.80 and 45,783.28 is: 63,182.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,021.28 : 115,951.80 = 45,783.28 : x
  2. Step 2: Convert to fraction form
    84,021.28/115,951.80 = 45,783.28/x
  3. Step 3: Cross multiply
    84,021.28x = 115,951.80 × 45,783.28
  4. Step 4: Simplify right side
    84,021.28x = 5,308,653,725.90
  5. Step 5: Solve for x
    x = 5,308,653,725.90/84,021.28
  6. Step 6: Final answer
    x = 63,182.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.