Home / 78,304.48-117,421.44-46,729.12

Finding the Fourth Proportional to 78,304.48, 117,421.44 and 46,729.12

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Solution

The fourth proportional to 78,304.48, 117,421.44 and 46,729.12 is: 70,072.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,304.48 : 117,421.44 = 46,729.12 : x
  2. Step 2: Convert to fraction form
    78,304.48/117,421.44 = 46,729.12/x
  3. Step 3: Cross multiply
    78,304.48x = 117,421.44 × 46,729.12
  4. Step 4: Simplify right side
    78,304.48x = 5,487,000,560.33
  5. Step 5: Solve for x
    x = 5,487,000,560.33/78,304.48
  6. Step 6: Final answer
    x = 70,072.63

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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.