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Finding the Fourth Proportional to 78,770.69, 108,699.21 and 44,774.45

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Solution

The fourth proportional to 78,770.69, 108,699.21 and 44,774.45 is: 61,786.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,770.69 : 108,699.21 = 44,774.45 : x
  2. Step 2: Convert to fraction form
    78,770.69/108,699.21 = 44,774.45/x
  3. Step 3: Cross multiply
    78,770.69x = 108,699.21 × 44,774.45
  4. Step 4: Simplify right side
    78,770.69x = 4,866,946,799.69
  5. Step 5: Solve for x
    x = 4,866,946,799.69/78,770.69
  6. Step 6: Final answer
    x = 61,786.27

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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.