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Finding the Fourth Proportional to 77,212.84, 115,593.90 and 47,541.64

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Solution

The fourth proportional to 77,212.84, 115,593.90 and 47,541.64 is: 71,173.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,212.84 : 115,593.90 = 47,541.64 : x
  2. Step 2: Convert to fraction form
    77,212.84/115,593.90 = 47,541.64/x
  3. Step 3: Cross multiply
    77,212.84x = 115,593.90 × 47,541.64
  4. Step 4: Simplify right side
    77,212.84x = 5,495,523,580.00
  5. Step 5: Solve for x
    x = 5,495,523,580.00/77,212.84
  6. Step 6: Final answer
    x = 71,173.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.