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Finding the Fourth Proportional to 92,759.81, 128,008.86 and 50,318.64

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Solution

The fourth proportional to 92,759.81, 128,008.86 and 50,318.64 is: 69,439.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,759.81 : 128,008.86 = 50,318.64 : x
  2. Step 2: Convert to fraction form
    92,759.81/128,008.86 = 50,318.64/x
  3. Step 3: Cross multiply
    92,759.81x = 128,008.86 × 50,318.64
  4. Step 4: Simplify right side
    92,759.81x = 6,441,231,554.46
  5. Step 5: Solve for x
    x = 6,441,231,554.46/92,759.81
  6. Step 6: Final answer
    x = 69,439.90

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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.