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Finding the Fourth Proportional to 79,277.69, 109,339.68 and 69,697.22

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Solution

The fourth proportional to 79,277.69, 109,339.68 and 69,697.22 is: 96,126.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,277.69 : 109,339.68 = 69,697.22 : x
  2. Step 2: Convert to fraction form
    79,277.69/109,339.68 = 69,697.22/x
  3. Step 3: Cross multiply
    79,277.69x = 109,339.68 × 69,697.22
  4. Step 4: Simplify right side
    79,277.69x = 7,620,671,731.69
  5. Step 5: Solve for x
    x = 7,620,671,731.69/79,277.69
  6. Step 6: Final answer
    x = 96,126.31

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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.