Home / 78,429.55-117,547.96-36,252.57

Finding the Fourth Proportional to 78,429.55, 117,547.96 and 36,252.57

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Solution

The fourth proportional to 78,429.55, 117,547.96 and 36,252.57 is: 54,334.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,429.55 : 117,547.96 = 36,252.57 : x
  2. Step 2: Convert to fraction form
    78,429.55/117,547.96 = 36,252.57/x
  3. Step 3: Cross multiply
    78,429.55x = 117,547.96 × 36,252.57
  4. Step 4: Simplify right side
    78,429.55x = 4,261,415,735.80
  5. Step 5: Solve for x
    x = 4,261,415,735.80/78,429.55
  6. Step 6: Final answer
    x = 54,334.31

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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.