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Finding the Fourth Proportional to 84,011.64, 115,935.70 and 45,771.06

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Solution

The fourth proportional to 84,011.64, 115,935.70 and 45,771.06 is: 63,163.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,011.64 : 115,935.70 = 45,771.06 : x
  2. Step 2: Convert to fraction form
    84,011.64/115,935.70 = 45,771.06/x
  3. Step 3: Cross multiply
    84,011.64x = 115,935.70 × 45,771.06
  4. Step 4: Simplify right side
    84,011.64x = 5,306,499,880.84
  5. Step 5: Solve for x
    x = 5,306,499,880.84/84,011.64
  6. Step 6: Final answer
    x = 63,163.86

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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.