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Finding the Fourth Proportional to 79,057, 109,124.58 and 56,765.80

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Solution

The fourth proportional to 79,057, 109,124.58 and 56,765.80 is: 78,355.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,057 : 109,124.58 = 56,765.80 : x
  2. Step 2: Convert to fraction form
    79,057/109,124.58 = 56,765.80/x
  3. Step 3: Cross multiply
    79,057x = 109,124.58 × 56,765.80
  4. Step 4: Simplify right side
    79,057x = 6,194,544,083.36
  5. Step 5: Solve for x
    x = 6,194,544,083.36/79,057
  6. Step 6: Final answer
    x = 78,355.42

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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.