Home / 39,987.20-59,942.40-31,097.60

Finding the Fourth Proportional to 39,987.20, 59,942.40 and 31,097.60

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Solution

The fourth proportional to 39,987.20, 59,942.40 and 31,097.60 is: 46,616.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,987.20 : 59,942.40 = 31,097.60 : x
  2. Step 2: Convert to fraction form
    39,987.20/59,942.40 = 31,097.60/x
  3. Step 3: Cross multiply
    39,987.20x = 59,942.40 × 31,097.60
  4. Step 4: Simplify right side
    39,987.20x = 1,864,064,778.24
  5. Step 5: Solve for x
    x = 1,864,064,778.24/39,987.20
  6. Step 6: Final answer
    x = 46,616.54

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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.