Home / 31,439.94-47,188.05-28,102.87

Finding the Fourth Proportional to 31,439.94, 47,188.05 and 28,102.87

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Solution

The fourth proportional to 31,439.94, 47,188.05 and 28,102.87 is: 42,179.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,439.94 : 47,188.05 = 28,102.87 : x
  2. Step 2: Convert to fraction form
    31,439.94/47,188.05 = 28,102.87/x
  3. Step 3: Cross multiply
    31,439.94x = 47,188.05 × 28,102.87
  4. Step 4: Simplify right side
    31,439.94x = 1,326,119,634.70
  5. Step 5: Solve for x
    x = 1,326,119,634.70/31,439.94
  6. Step 6: Final answer
    x = 42,179.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.