Home / 54,811.86-75,642.53-30,939.36

Finding the Fourth Proportional to 54,811.86, 75,642.53 and 30,939.36

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Solution

The fourth proportional to 54,811.86, 75,642.53 and 30,939.36 is: 42,697.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,811.86 : 75,642.53 = 30,939.36 : x
  2. Step 2: Convert to fraction form
    54,811.86/75,642.53 = 30,939.36/x
  3. Step 3: Cross multiply
    54,811.86x = 75,642.53 × 30,939.36
  4. Step 4: Simplify right side
    54,811.86x = 2,340,331,312.28
  5. Step 5: Solve for x
    x = 2,340,331,312.28/54,811.86
  6. Step 6: Final answer
    x = 42,697.54

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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.