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Finding the Fourth Proportional to 50,987.68, 70,334.64 and 47,379.44

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Solution

The fourth proportional to 50,987.68, 70,334.64 and 47,379.44 is: 65,357.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,987.68 : 70,334.64 = 47,379.44 : x
  2. Step 2: Convert to fraction form
    50,987.68/70,334.64 = 47,379.44/x
  3. Step 3: Cross multiply
    50,987.68x = 70,334.64 × 47,379.44
  4. Step 4: Simplify right side
    50,987.68x = 3,332,415,855.80
  5. Step 5: Solve for x
    x = 3,332,415,855.80/50,987.68
  6. Step 6: Final answer
    x = 65,357.28

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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.