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Finding the Fourth Proportional to 70,284.86, 96,994.51 and 38,454.45

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Solution

The fourth proportional to 70,284.86, 96,994.51 and 38,454.45 is: 53,067.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,284.86 : 96,994.51 = 38,454.45 : x
  2. Step 2: Convert to fraction form
    70,284.86/96,994.51 = 38,454.45/x
  3. Step 3: Cross multiply
    70,284.86x = 96,994.51 × 38,454.45
  4. Step 4: Simplify right side
    70,284.86x = 3,729,870,291.51
  5. Step 5: Solve for x
    x = 3,729,870,291.51/70,284.86
  6. Step 6: Final answer
    x = 53,067.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.