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Finding the Fourth Proportional to 64,838.36, 89,471.58 and 36,551

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Solution

The fourth proportional to 64,838.36, 89,471.58 and 36,551 is: 50,437.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,838.36 : 89,471.58 = 36,551 : x
  2. Step 2: Convert to fraction form
    64,838.36/89,471.58 = 36,551/x
  3. Step 3: Cross multiply
    64,838.36x = 89,471.58 × 36,551
  4. Step 4: Simplify right side
    64,838.36x = 3,270,275,720.58
  5. Step 5: Solve for x
    x = 3,270,275,720.58/64,838.36
  6. Step 6: Final answer
    x = 50,437.36

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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.