Home / 54,225.32-81,275.60-20,930.81

Finding the Fourth Proportional to 54,225.32, 81,275.60 and 20,930.81

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Solution

The fourth proportional to 54,225.32, 81,275.60 and 20,930.81 is: 31,372.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,225.32 : 81,275.60 = 20,930.81 : x
  2. Step 2: Convert to fraction form
    54,225.32/81,275.60 = 20,930.81/x
  3. Step 3: Cross multiply
    54,225.32x = 81,275.60 × 20,930.81
  4. Step 4: Simplify right side
    54,225.32x = 1,701,163,787.19
  5. Step 5: Solve for x
    x = 1,701,163,787.19/54,225.32
  6. Step 6: Final answer
    x = 31,372.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.