Home / 56,276.94-77,662.69-30,782.80

Finding the Fourth Proportional to 56,276.94, 77,662.69 and 30,782.80

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Solution

The fourth proportional to 56,276.94, 77,662.69 and 30,782.80 is: 42,480.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,276.94 : 77,662.69 = 30,782.80 : x
  2. Step 2: Convert to fraction form
    56,276.94/77,662.69 = 30,782.80/x
  3. Step 3: Cross multiply
    56,276.94x = 77,662.69 × 30,782.80
  4. Step 4: Simplify right side
    56,276.94x = 2,390,675,053.73
  5. Step 5: Solve for x
    x = 2,390,675,053.73/56,276.94
  6. Step 6: Final answer
    x = 42,480.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.