Home / 78,237.48-117,175.50-47,003.88

Finding the Fourth Proportional to 78,237.48, 117,175.50 and 47,003.88

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Solution

The fourth proportional to 78,237.48, 117,175.50 and 47,003.88 is: 70,397.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,237.48 : 117,175.50 = 47,003.88 : x
  2. Step 2: Convert to fraction form
    78,237.48/117,175.50 = 47,003.88/x
  3. Step 3: Cross multiply
    78,237.48x = 117,175.50 × 47,003.88
  4. Step 4: Simplify right side
    78,237.48x = 5,507,703,140.94
  5. Step 5: Solve for x
    x = 5,507,703,140.94/78,237.48
  6. Step 6: Final answer
    x = 70,397.25

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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.