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Finding the Fourth Proportional to 76,168.64, 105,080.15 and 45,936.77

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Solution

The fourth proportional to 76,168.64, 105,080.15 and 45,936.77 is: 63,373.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,168.64 : 105,080.15 = 45,936.77 : x
  2. Step 2: Convert to fraction form
    76,168.64/105,080.15 = 45,936.77/x
  3. Step 3: Cross multiply
    76,168.64x = 105,080.15 × 45,936.77
  4. Step 4: Simplify right side
    76,168.64x = 4,827,042,682.12
  5. Step 5: Solve for x
    x = 4,827,042,682.12/76,168.64
  6. Step 6: Final answer
    x = 63,373.10

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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.