Home / 54,678.71-75,456.27-30,813.05

Finding the Fourth Proportional to 54,678.71, 75,456.27 and 30,813.05

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Solution

The fourth proportional to 54,678.71, 75,456.27 and 30,813.05 is: 42,521.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,678.71 : 75,456.27 = 30,813.05 : x
  2. Step 2: Convert to fraction form
    54,678.71/75,456.27 = 30,813.05/x
  3. Step 3: Cross multiply
    54,678.71x = 75,456.27 × 30,813.05
  4. Step 4: Simplify right side
    54,678.71x = 2,325,037,820.32
  5. Step 5: Solve for x
    x = 2,325,037,820.32/54,678.71
  6. Step 6: Final answer
    x = 42,521.81

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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.