Home / 78,986.84-118,290.89-57,582.32

Finding the Fourth Proportional to 78,986.84, 118,290.89 and 57,582.32

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Solution

The fourth proportional to 78,986.84, 118,290.89 and 57,582.32 is: 86,235.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,986.84 : 118,290.89 = 57,582.32 : x
  2. Step 2: Convert to fraction form
    78,986.84/118,290.89 = 57,582.32/x
  3. Step 3: Cross multiply
    78,986.84x = 118,290.89 × 57,582.32
  4. Step 4: Simplify right side
    78,986.84x = 6,811,463,433.57
  5. Step 5: Solve for x
    x = 6,811,463,433.57/78,986.84
  6. Step 6: Final answer
    x = 86,235.43

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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.