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Finding the Fourth Proportional to 89,065.56, 133,598.40 and 39,783

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Solution

The fourth proportional to 89,065.56, 133,598.40 and 39,783 is: 59,674.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,065.56 : 133,598.40 = 39,783 : x
  2. Step 2: Convert to fraction form
    89,065.56/133,598.40 = 39,783/x
  3. Step 3: Cross multiply
    89,065.56x = 133,598.40 × 39,783
  4. Step 4: Simplify right side
    89,065.56x = 5,314,945,147.20
  5. Step 5: Solve for x
    x = 5,314,945,147.20/89,065.56
  6. Step 6: Final answer
    x = 59,674.53

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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.