Home / 78,726.37-118,130.55-34,357.60

Finding the Fourth Proportional to 78,726.37, 118,130.55 and 34,357.60

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Solution

The fourth proportional to 78,726.37, 118,130.55 and 34,357.60 is: 51,554.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,726.37 : 118,130.55 = 34,357.60 : x
  2. Step 2: Convert to fraction form
    78,726.37/118,130.55 = 34,357.60/x
  3. Step 3: Cross multiply
    78,726.37x = 118,130.55 × 34,357.60
  4. Step 4: Simplify right side
    78,726.37x = 4,058,682,184.68
  5. Step 5: Solve for x
    x = 4,058,682,184.68/78,726.37
  6. Step 6: Final answer
    x = 51,554.29

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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.