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Finding the Fourth Proportional to 78,773.12, 118,160.32 and 55,504

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Solution

The fourth proportional to 78,773.12, 118,160.32 and 55,504 is: 83,256.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,773.12 : 118,160.32 = 55,504 : x
  2. Step 2: Convert to fraction form
    78,773.12/118,160.32 = 55,504/x
  3. Step 3: Cross multiply
    78,773.12x = 118,160.32 × 55,504
  4. Step 4: Simplify right side
    78,773.12x = 6,558,370,401.28
  5. Step 5: Solve for x
    x = 6,558,370,401.28/78,773.12
  6. Step 6: Final answer
    x = 83,256.45

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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.