Home / 57,138.16-78,850.54-31,645.84

Finding the Fourth Proportional to 57,138.16, 78,850.54 and 31,645.84

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Solution

The fourth proportional to 57,138.16, 78,850.54 and 31,645.84 is: 43,671.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,138.16 : 78,850.54 = 31,645.84 : x
  2. Step 2: Convert to fraction form
    57,138.16/78,850.54 = 31,645.84/x
  3. Step 3: Cross multiply
    57,138.16x = 78,850.54 × 31,645.84
  4. Step 4: Simplify right side
    57,138.16x = 2,495,291,572.75
  5. Step 5: Solve for x
    x = 2,495,291,572.75/57,138.16
  6. Step 6: Final answer
    x = 43,671.19

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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.