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Finding the Fourth Proportional to 77,885.46, 116,744.76 and 55,631.34

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Solution

The fourth proportional to 77,885.46, 116,744.76 and 55,631.34 is: 83,387.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,885.46 : 116,744.76 = 55,631.34 : x
  2. Step 2: Convert to fraction form
    77,885.46/116,744.76 = 55,631.34/x
  3. Step 3: Cross multiply
    77,885.46x = 116,744.76 × 55,631.34
  4. Step 4: Simplify right side
    77,885.46x = 6,494,667,436.78
  5. Step 5: Solve for x
    x = 6,494,667,436.78/77,885.46
  6. Step 6: Final answer
    x = 83,387.42

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1.5x scale

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.