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Finding the Fourth Proportional to 78,954.56, 108,952.70 and 43,144.86

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Solution

The fourth proportional to 78,954.56, 108,952.70 and 43,144.86 is: 59,537.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,954.56 : 108,952.70 = 43,144.86 : x
  2. Step 2: Convert to fraction form
    78,954.56/108,952.70 = 43,144.86/x
  3. Step 3: Cross multiply
    78,954.56x = 108,952.70 × 43,144.86
  4. Step 4: Simplify right side
    78,954.56x = 4,700,748,772.40
  5. Step 5: Solve for x
    x = 4,700,748,772.40/78,954.56
  6. Step 6: Final answer
    x = 59,537.40

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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.