Home / 31,106.40-46,659.60-28,190.40

Finding the Fourth Proportional to 31,106.40, 46,659.60 and 28,190.40

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Solution

The fourth proportional to 31,106.40, 46,659.60 and 28,190.40 is: 42,285.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,106.40 : 46,659.60 = 28,190.40 : x
  2. Step 2: Convert to fraction form
    31,106.40/46,659.60 = 28,190.40/x
  3. Step 3: Cross multiply
    31,106.40x = 46,659.60 × 28,190.40
  4. Step 4: Simplify right side
    31,106.40x = 1,315,352,787.84
  5. Step 5: Solve for x
    x = 1,315,352,787.84/31,106.40
  6. Step 6: Final answer
    x = 42,285.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.