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Finding the Fourth Proportional to 78,373.98, 117,560.97 and 55,104.30

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Solution

The fourth proportional to 78,373.98, 117,560.97 and 55,104.30 is: 82,656.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,373.98 : 117,560.97 = 55,104.30 : x
  2. Step 2: Convert to fraction form
    78,373.98/117,560.97 = 55,104.30/x
  3. Step 3: Cross multiply
    78,373.98x = 117,560.97 × 55,104.30
  4. Step 4: Simplify right side
    78,373.98x = 6,478,114,959.17
  5. Step 5: Solve for x
    x = 6,478,114,959.17/78,373.98
  6. Step 6: Final answer
    x = 82,656.45

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1.5x scale

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.