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Finding the Fourth Proportional to 51,406.01, 70,939.88 and 28,745.04

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Solution

The fourth proportional to 51,406.01, 70,939.88 and 28,745.04 is: 39,667.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,406.01 : 70,939.88 = 28,745.04 : x
  2. Step 2: Convert to fraction form
    51,406.01/70,939.88 = 28,745.04/x
  3. Step 3: Cross multiply
    51,406.01x = 70,939.88 × 28,745.04
  4. Step 4: Simplify right side
    51,406.01x = 2,039,169,688.20
  5. Step 5: Solve for x
    x = 2,039,169,688.20/51,406.01
  6. Step 6: Final answer
    x = 39,667.93

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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.