Home / 47,086.45-70,628.71-13,805.78

Finding the Fourth Proportional to 47,086.45, 70,628.71 and 13,805.78

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Solution

The fourth proportional to 47,086.45, 70,628.71 and 13,805.78 is: 20,708.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,086.45 : 70,628.71 = 13,805.78 : x
  2. Step 2: Convert to fraction form
    47,086.45/70,628.71 = 13,805.78/x
  3. Step 3: Cross multiply
    47,086.45x = 70,628.71 × 13,805.78
  4. Step 4: Simplify right side
    47,086.45x = 975,084,368.14
  5. Step 5: Solve for x
    x = 975,084,368.14/47,086.45
  6. Step 6: Final answer
    x = 20,708.38

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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.