Home / 45,412.09-68,117.34-20,434.46

Finding the Fourth Proportional to 45,412.09, 68,117.34 and 20,434.46

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Solution

The fourth proportional to 45,412.09, 68,117.34 and 20,434.46 is: 30,651.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,412.09 : 68,117.34 = 20,434.46 : x
  2. Step 2: Convert to fraction form
    45,412.09/68,117.34 = 20,434.46/x
  3. Step 3: Cross multiply
    45,412.09x = 68,117.34 × 20,434.46
  4. Step 4: Simplify right side
    45,412.09x = 1,391,941,059.54
  5. Step 5: Solve for x
    x = 1,391,941,059.54/45,412.09
  6. Step 6: Final answer
    x = 30,651.34

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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.