Home / 51,434.40-70,987.68-30,218.88

Finding the Fourth Proportional to 51,434.40, 70,987.68 and 30,218.88

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Solution

The fourth proportional to 51,434.40, 70,987.68 and 30,218.88 is: 41,706.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,434.40 : 70,987.68 = 30,218.88 : x
  2. Step 2: Convert to fraction form
    51,434.40/70,987.68 = 30,218.88/x
  3. Step 3: Cross multiply
    51,434.40x = 70,987.68 × 30,218.88
  4. Step 4: Simplify right side
    51,434.40x = 2,145,168,183.40
  5. Step 5: Solve for x
    x = 2,145,168,183.40/51,434.40
  6. Step 6: Final answer
    x = 41,706.88

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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.