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Finding the Fourth Proportional to 85,754.64, 118,313.84 and 55,563.20

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Solution

The fourth proportional to 85,754.64, 118,313.84 and 55,563.20 is: 76,659.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,754.64 : 118,313.84 = 55,563.20 : x
  2. Step 2: Convert to fraction form
    85,754.64/118,313.84 = 55,563.20/x
  3. Step 3: Cross multiply
    85,754.64x = 118,313.84 × 55,563.20
  4. Step 4: Simplify right side
    85,754.64x = 6,573,895,554.69
  5. Step 5: Solve for x
    x = 6,573,895,554.69/85,754.64
  6. Step 6: Final answer
    x = 76,659.36

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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.