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Finding the Fourth Proportional to 78,415.56, 108,246.58 and 52,956.45

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Solution

The fourth proportional to 78,415.56, 108,246.58 and 52,956.45 is: 73,102.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,415.56 : 108,246.58 = 52,956.45 : x
  2. Step 2: Convert to fraction form
    78,415.56/108,246.58 = 52,956.45/x
  3. Step 3: Cross multiply
    78,415.56x = 108,246.58 × 52,956.45
  4. Step 4: Simplify right side
    78,415.56x = 5,732,354,469.05
  5. Step 5: Solve for x
    x = 5,732,354,469.05/78,415.56
  6. Step 6: Final answer
    x = 73,102.26

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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.