Home / 77,699.49-116,771.36-72,434.31

Finding the Fourth Proportional to 77,699.49, 116,771.36 and 72,434.31

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Solution

The fourth proportional to 77,699.49, 116,771.36 and 72,434.31 is: 108,858.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,699.49 : 116,771.36 = 72,434.31 : x
  2. Step 2: Convert to fraction form
    77,699.49/116,771.36 = 72,434.31/x
  3. Step 3: Cross multiply
    77,699.49x = 116,771.36 × 72,434.31
  4. Step 4: Simplify right side
    77,699.49x = 8,458,252,527.19
  5. Step 5: Solve for x
    x = 8,458,252,527.19/77,699.49
  6. Step 6: Final answer
    x = 108,858.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.