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Finding the Fourth Proportional to 77,171.34, 106,354.34 and 63,660.54

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Solution

The fourth proportional to 77,171.34, 106,354.34 and 63,660.54 is: 87,734.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,171.34 : 106,354.34 = 63,660.54 : x
  2. Step 2: Convert to fraction form
    77,171.34/106,354.34 = 63,660.54/x
  3. Step 3: Cross multiply
    77,171.34x = 106,354.34 × 63,660.54
  4. Step 4: Simplify right side
    77,171.34x = 6,770,574,715.74
  5. Step 5: Solve for x
    x = 6,770,574,715.74/77,171.34
  6. Step 6: Final answer
    x = 87,734.32

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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.