Home / 57,120.36-78,826.08-31,969.86

Finding the Fourth Proportional to 57,120.36, 78,826.08 and 31,969.86

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Solution

The fourth proportional to 57,120.36, 78,826.08 and 31,969.86 is: 44,118.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,120.36 : 78,826.08 = 31,969.86 : x
  2. Step 2: Convert to fraction form
    57,120.36/78,826.08 = 31,969.86/x
  3. Step 3: Cross multiply
    57,120.36x = 78,826.08 × 31,969.86
  4. Step 4: Simplify right side
    57,120.36x = 2,520,058,741.95
  5. Step 5: Solve for x
    x = 2,520,058,741.95/57,120.36
  6. Step 6: Final answer
    x = 44,118.40

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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.