Home / 84,021.12-126,055.08-36,640.35

Finding the Fourth Proportional to 84,021.12, 126,055.08 and 36,640.35

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Solution

The fourth proportional to 84,021.12, 126,055.08 and 36,640.35 is: 54,970.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,021.12 : 126,055.08 = 36,640.35 : x
  2. Step 2: Convert to fraction form
    84,021.12/126,055.08 = 36,640.35/x
  3. Step 3: Cross multiply
    84,021.12x = 126,055.08 × 36,640.35
  4. Step 4: Simplify right side
    84,021.12x = 4,618,702,250.48
  5. Step 5: Solve for x
    x = 4,618,702,250.48/84,021.12
  6. Step 6: Final answer
    x = 54,970.73

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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.