Home / 78,941.96-108,938.61-43,131.20

Finding the Fourth Proportional to 78,941.96, 108,938.61 and 43,131.20

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Solution

The fourth proportional to 78,941.96, 108,938.61 and 43,131.20 is: 59,520.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,941.96 : 108,938.61 = 43,131.20 : x
  2. Step 2: Convert to fraction form
    78,941.96/108,938.61 = 43,131.20/x
  3. Step 3: Cross multiply
    78,941.96x = 108,938.61 × 43,131.20
  4. Step 4: Simplify right side
    78,941.96x = 4,698,652,975.63
  5. Step 5: Solve for x
    x = 4,698,652,975.63/78,941.96
  6. Step 6: Final answer
    x = 59,520.35

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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.