Home / 70,859.07-106,215.71-31,434.75

Finding the Fourth Proportional to 70,859.07, 106,215.71 and 31,434.75

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Solution

The fourth proportional to 70,859.07, 106,215.71 and 31,434.75 is: 47,119.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,859.07 : 106,215.71 = 31,434.75 : x
  2. Step 2: Convert to fraction form
    70,859.07/106,215.71 = 31,434.75/x
  3. Step 3: Cross multiply
    70,859.07x = 106,215.71 × 31,434.75
  4. Step 4: Simplify right side
    70,859.07x = 3,338,864,132.75
  5. Step 5: Solve for x
    x = 3,338,864,132.75/70,859.07
  6. Step 6: Final answer
    x = 47,119.78

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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.