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Finding the Fourth Proportional to 70,771.12, 105,828.56 and 54,795.06

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Solution

The fourth proportional to 70,771.12, 105,828.56 and 54,795.06 is: 81,938.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,771.12 : 105,828.56 = 54,795.06 : x
  2. Step 2: Convert to fraction form
    70,771.12/105,828.56 = 54,795.06/x
  3. Step 3: Cross multiply
    70,771.12x = 105,828.56 × 54,795.06
  4. Step 4: Simplify right side
    70,771.12x = 5,798,882,294.91
  5. Step 5: Solve for x
    x = 5,798,882,294.91/70,771.12
  6. Step 6: Final answer
    x = 81,938.54

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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.