Home / 51,420.08-70,958.30-28,759.12

Finding the Fourth Proportional to 51,420.08, 70,958.30 and 28,759.12

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Solution

The fourth proportional to 51,420.08, 70,958.30 and 28,759.12 is: 39,686.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,420.08 : 70,958.30 = 28,759.12 : x
  2. Step 2: Convert to fraction form
    51,420.08/70,958.30 = 28,759.12/x
  3. Step 3: Cross multiply
    51,420.08x = 70,958.30 × 28,759.12
  4. Step 4: Simplify right side
    51,420.08x = 2,040,697,943.50
  5. Step 5: Solve for x
    x = 2,040,697,943.50/51,420.08
  6. Step 6: Final answer
    x = 39,686.79

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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.