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Finding the Fourth Proportional to 72,667.94, 100,281.24 and 40,836.15

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Solution

The fourth proportional to 72,667.94, 100,281.24 and 40,836.15 is: 56,353.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,667.94 : 100,281.24 = 40,836.15 : x
  2. Step 2: Convert to fraction form
    72,667.94/100,281.24 = 40,836.15/x
  3. Step 3: Cross multiply
    72,667.94x = 100,281.24 × 40,836.15
  4. Step 4: Simplify right side
    72,667.94x = 4,095,099,758.83
  5. Step 5: Solve for x
    x = 4,095,099,758.83/72,667.94
  6. Step 6: Final answer
    x = 56,353.60

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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.