Home / 31,340.40-47,289.78-30,125.28

Finding the Fourth Proportional to 31,340.40, 47,289.78 and 30,125.28

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Solution

The fourth proportional to 31,340.40, 47,289.78 and 30,125.28 is: 45,456.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,340.40 : 47,289.78 = 30,125.28 : x
  2. Step 2: Convert to fraction form
    31,340.40/47,289.78 = 30,125.28/x
  3. Step 3: Cross multiply
    31,340.40x = 47,289.78 × 30,125.28
  4. Step 4: Simplify right side
    31,340.40x = 1,424,617,863.64
  5. Step 5: Solve for x
    x = 1,424,617,863.64/31,340.40
  6. Step 6: Final answer
    x = 45,456.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.