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Finding the Fourth Proportional to 48,698.70, 67,218.60 and 28,559.94

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Solution

The fourth proportional to 48,698.70, 67,218.60 and 28,559.94 is: 39,421.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,698.70 : 67,218.60 = 28,559.94 : x
  2. Step 2: Convert to fraction form
    48,698.70/67,218.60 = 28,559.94/x
  3. Step 3: Cross multiply
    48,698.70x = 67,218.60 × 28,559.94
  4. Step 4: Simplify right side
    48,698.70x = 1,919,759,182.88
  5. Step 5: Solve for x
    x = 1,919,759,182.88/48,698.70
  6. Step 6: Final answer
    x = 39,421.16

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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.