Home / 80,811.36-121,176.48-47,088.28

Finding the Fourth Proportional to 80,811.36, 121,176.48 and 47,088.28

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Solution

The fourth proportional to 80,811.36, 121,176.48 and 47,088.28 is: 70,608.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,811.36 : 121,176.48 = 47,088.28 : x
  2. Step 2: Convert to fraction form
    80,811.36/121,176.48 = 47,088.28/x
  3. Step 3: Cross multiply
    80,811.36x = 121,176.48 × 47,088.28
  4. Step 4: Simplify right side
    80,811.36x = 5,705,992,019.65
  5. Step 5: Solve for x
    x = 5,705,992,019.65/80,811.36
  6. Step 6: Final answer
    x = 70,608.79

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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.