Home / 77,803.20-116,618.40-40,348.80

Finding the Fourth Proportional to 77,803.20, 116,618.40 and 40,348.80

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Solution

The fourth proportional to 77,803.20, 116,618.40 and 40,348.80 is: 60,478.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,803.20 : 116,618.40 = 40,348.80 : x
  2. Step 2: Convert to fraction form
    77,803.20/116,618.40 = 40,348.80/x
  3. Step 3: Cross multiply
    77,803.20x = 116,618.40 × 40,348.80
  4. Step 4: Simplify right side
    77,803.20x = 4,705,412,497.92
  5. Step 5: Solve for x
    x = 4,705,412,497.92/77,803.20
  6. Step 6: Final answer
    x = 60,478.39

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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.