Home / 55,931.58-77,168.20-31,728.56

Finding the Fourth Proportional to 55,931.58, 77,168.20 and 31,728.56

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Solution

The fourth proportional to 55,931.58, 77,168.20 and 31,728.56 is: 43,775.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,931.58 : 77,168.20 = 31,728.56 : x
  2. Step 2: Convert to fraction form
    55,931.58/77,168.20 = 31,728.56/x
  3. Step 3: Cross multiply
    55,931.58x = 77,168.20 × 31,728.56
  4. Step 4: Simplify right side
    55,931.58x = 2,448,435,863.79
  5. Step 5: Solve for x
    x = 2,448,435,863.79/55,931.58
  6. Step 6: Final answer
    x = 43,775.55

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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.