Home / 51,279.12-70,767-30,057.12

Finding the Fourth Proportional to 51,279.12, 70,767 and 30,057.12

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Solution

The fourth proportional to 51,279.12, 70,767 and 30,057.12 is: 41,479.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,279.12 : 70,767 = 30,057.12 : x
  2. Step 2: Convert to fraction form
    51,279.12/70,767 = 30,057.12/x
  3. Step 3: Cross multiply
    51,279.12x = 70,767 × 30,057.12
  4. Step 4: Simplify right side
    51,279.12x = 2,127,052,211.04
  5. Step 5: Solve for x
    x = 2,127,052,211.04/51,279.12
  6. Step 6: Final answer
    x = 41,479.89

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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.