Home / 77,400.43-116,128.31-47,067.28

Finding the Fourth Proportional to 77,400.43, 116,128.31 and 47,067.28

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Solution

The fourth proportional to 77,400.43, 116,128.31 and 47,067.28 is: 70,617.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,400.43 : 116,128.31 = 47,067.28 : x
  2. Step 2: Convert to fraction form
    77,400.43/116,128.31 = 47,067.28/x
  3. Step 3: Cross multiply
    77,400.43x = 116,128.31 × 47,067.28
  4. Step 4: Simplify right side
    77,400.43x = 5,465,843,682.70
  5. Step 5: Solve for x
    x = 5,465,843,682.70/77,400.43
  6. Step 6: Final answer
    x = 70,617.74

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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.