Home / 57,155.28-78,878.08-31,662.72

Finding the Fourth Proportional to 57,155.28, 78,878.08 and 31,662.72

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Solution

The fourth proportional to 57,155.28, 78,878.08 and 31,662.72 is: 43,696.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,155.28 : 78,878.08 = 31,662.72 : x
  2. Step 2: Convert to fraction form
    57,155.28/78,878.08 = 31,662.72/x
  3. Step 3: Cross multiply
    57,155.28x = 78,878.08 × 31,662.72
  4. Step 4: Simplify right side
    57,155.28x = 2,497,494,684.34
  5. Step 5: Solve for x
    x = 2,497,494,684.34/57,155.28
  6. Step 6: Final answer
    x = 43,696.66

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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.