Home / 56,479.14-77,942.66-30,986.60

Finding the Fourth Proportional to 56,479.14, 77,942.66 and 30,986.60

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Solution

The fourth proportional to 56,479.14, 77,942.66 and 30,986.60 is: 42,762.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,479.14 : 77,942.66 = 30,986.60 : x
  2. Step 2: Convert to fraction form
    56,479.14/77,942.66 = 30,986.60/x
  3. Step 3: Cross multiply
    56,479.14x = 77,942.66 × 30,986.60
  4. Step 4: Simplify right side
    56,479.14x = 2,415,177,483.71
  5. Step 5: Solve for x
    x = 2,415,177,483.71/56,479.14
  6. Step 6: Final answer
    x = 42,762.29

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1.5x scale

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.