Home / 78,965.15-118,467.18-55,637.15

Finding the Fourth Proportional to 78,965.15, 118,467.18 and 55,637.15

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Solution

The fourth proportional to 78,965.15, 118,467.18 and 55,637.15 is: 83,469.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,965.15 : 118,467.18 = 55,637.15 : x
  2. Step 2: Convert to fraction form
    78,965.15/118,467.18 = 55,637.15/x
  3. Step 3: Cross multiply
    78,965.15x = 118,467.18 × 55,637.15
  4. Step 4: Simplify right side
    78,965.15x = 6,591,176,263.74
  5. Step 5: Solve for x
    x = 6,591,176,263.74/78,965.15
  6. Step 6: Final answer
    x = 83,469.43

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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.