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Finding the Fourth Proportional to 79,579.98, 109,830.96 and 51,367.68

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Solution

The fourth proportional to 79,579.98, 109,830.96 and 51,367.68 is: 70,894.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,579.98 : 109,830.96 = 51,367.68 : x
  2. Step 2: Convert to fraction form
    79,579.98/109,830.96 = 51,367.68/x
  3. Step 3: Cross multiply
    79,579.98x = 109,830.96 × 51,367.68
  4. Step 4: Simplify right side
    79,579.98x = 5,641,761,607.37
  5. Step 5: Solve for x
    x = 5,641,761,607.37/79,579.98
  6. Step 6: Final answer
    x = 70,894.23

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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.