Home / 75,478.40-113,145.60-28,080.80

Finding the Fourth Proportional to 75,478.40, 113,145.60 and 28,080.80

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Solution

The fourth proportional to 75,478.40, 113,145.60 and 28,080.80 is: 42,094.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,478.40 : 113,145.60 = 28,080.80 : x
  2. Step 2: Convert to fraction form
    75,478.40/113,145.60 = 28,080.80/x
  3. Step 3: Cross multiply
    75,478.40x = 113,145.60 × 28,080.80
  4. Step 4: Simplify right side
    75,478.40x = 3,177,218,964.48
  5. Step 5: Solve for x
    x = 3,177,218,964.48/75,478.40
  6. Step 6: Final answer
    x = 42,094.41

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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.