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Finding the Fourth Proportional to 64,947.40, 89,628.60 and 36,647.62

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Solution

The fourth proportional to 64,947.40, 89,628.60 and 36,647.62 is: 50,574.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,947.40 : 89,628.60 = 36,647.62 : x
  2. Step 2: Convert to fraction form
    64,947.40/89,628.60 = 36,647.62/x
  3. Step 3: Cross multiply
    64,947.40x = 89,628.60 × 36,647.62
  4. Step 4: Simplify right side
    64,947.40x = 3,284,674,873.93
  5. Step 5: Solve for x
    x = 3,284,674,873.93/64,947.40
  6. Step 6: Final answer
    x = 50,574.39

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1.5x scale

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.