Home / 55,729.80-76,908.32-30,579.28

Finding the Fourth Proportional to 55,729.80, 76,908.32 and 30,579.28

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Solution

The fourth proportional to 55,729.80, 76,908.32 and 30,579.28 is: 42,200.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,729.80 : 76,908.32 = 30,579.28 : x
  2. Step 2: Convert to fraction form
    55,729.80/76,908.32 = 30,579.28/x
  3. Step 3: Cross multiply
    55,729.80x = 76,908.32 × 30,579.28
  4. Step 4: Simplify right side
    55,729.80x = 2,351,801,051.61
  5. Step 5: Solve for x
    x = 2,351,801,051.61/55,729.80
  6. Step 6: Final answer
    x = 42,200.06

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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.