Home / 56,334.45-77,740.38-30,840.21

Finding the Fourth Proportional to 56,334.45, 77,740.38 and 30,840.21

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Solution

The fourth proportional to 56,334.45, 77,740.38 and 30,840.21 is: 42,558.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,334.45 : 77,740.38 = 30,840.21 : x
  2. Step 2: Convert to fraction form
    56,334.45/77,740.38 = 30,840.21/x
  3. Step 3: Cross multiply
    56,334.45x = 77,740.38 × 30,840.21
  4. Step 4: Simplify right side
    56,334.45x = 2,397,529,644.68
  5. Step 5: Solve for x
    x = 2,397,529,644.68/56,334.45
  6. Step 6: Final answer
    x = 42,558.85

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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.