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Finding the Fourth Proportional to 78,372.36, 108,186.96 and 52,913.22

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Solution

The fourth proportional to 78,372.36, 108,186.96 and 52,913.22 is: 73,042.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,372.36 : 108,186.96 = 52,913.22 : x
  2. Step 2: Convert to fraction form
    78,372.36/108,186.96 = 52,913.22/x
  3. Step 3: Cross multiply
    78,372.36x = 108,186.96 × 52,913.22
  4. Step 4: Simplify right side
    78,372.36x = 5,724,520,415.61
  5. Step 5: Solve for x
    x = 5,724,520,415.61/78,372.36
  6. Step 6: Final answer
    x = 73,042.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.