Home / 51,067.12-70,443.85-30,643.90

Finding the Fourth Proportional to 51,067.12, 70,443.85 and 30,643.90

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Solution

The fourth proportional to 51,067.12, 70,443.85 and 30,643.90 is: 42,271.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,067.12 : 70,443.85 = 30,643.90 : x
  2. Step 2: Convert to fraction form
    51,067.12/70,443.85 = 30,643.90/x
  3. Step 3: Cross multiply
    51,067.12x = 70,443.85 × 30,643.90
  4. Step 4: Simplify right side
    51,067.12x = 2,158,674,141.80
  5. Step 5: Solve for x
    x = 2,158,674,141.80/51,067.12
  6. Step 6: Final answer
    x = 42,271.31

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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.