Home / 81,152.48-121,728.96-28,533.44

Finding the Fourth Proportional to 81,152.48, 121,728.96 and 28,533.44

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Solution

The fourth proportional to 81,152.48, 121,728.96 and 28,533.44 is: 42,800.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,152.48 : 121,728.96 = 28,533.44 : x
  2. Step 2: Convert to fraction form
    81,152.48/121,728.96 = 28,533.44/x
  3. Step 3: Cross multiply
    81,152.48x = 121,728.96 × 28,533.44
  4. Step 4: Simplify right side
    81,152.48x = 3,473,345,976.42
  5. Step 5: Solve for x
    x = 3,473,345,976.42/81,152.48
  6. Step 6: Final answer
    x = 42,800.24

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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.