Home / 51,439.70-70,993.32-28,779.95

Finding the Fourth Proportional to 51,439.70, 70,993.32 and 28,779.95

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Solution

The fourth proportional to 51,439.70, 70,993.32 and 28,779.95 is: 39,719.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,439.70 : 70,993.32 = 28,779.95 : x
  2. Step 2: Convert to fraction form
    51,439.70/70,993.32 = 28,779.95/x
  3. Step 3: Cross multiply
    51,439.70x = 70,993.32 × 28,779.95
  4. Step 4: Simplify right side
    51,439.70x = 2,043,184,199.93
  5. Step 5: Solve for x
    x = 2,043,184,199.93/51,439.70
  6. Step 6: Final answer
    x = 39,719.99

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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.