Home / 77,318.58-106,702.26-73,775.64

Finding the Fourth Proportional to 77,318.58, 106,702.26 and 73,775.64

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Solution

The fourth proportional to 77,318.58, 106,702.26 and 73,775.64 is: 101,812.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,318.58 : 106,702.26 = 73,775.64 : x
  2. Step 2: Convert to fraction form
    77,318.58/106,702.26 = 73,775.64/x
  3. Step 3: Cross multiply
    77,318.58x = 106,702.26 × 73,775.64
  4. Step 4: Simplify right side
    77,318.58x = 7,872,027,520.95
  5. Step 5: Solve for x
    x = 7,872,027,520.95/77,318.58
  6. Step 6: Final answer
    x = 101,812.88

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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.