Home / 74,728.80-112,136.64-28,014.24

Finding the Fourth Proportional to 74,728.80, 112,136.64 and 28,014.24

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Solution

The fourth proportional to 74,728.80, 112,136.64 and 28,014.24 is: 42,037.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,728.80 : 112,136.64 = 28,014.24 : x
  2. Step 2: Convert to fraction form
    74,728.80/112,136.64 = 28,014.24/x
  3. Step 3: Cross multiply
    74,728.80x = 112,136.64 × 28,014.24
  4. Step 4: Simplify right side
    74,728.80x = 3,141,422,745.75
  5. Step 5: Solve for x
    x = 3,141,422,745.75/74,728.80
  6. Step 6: Final answer
    x = 42,037.64

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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.