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Finding the Fourth Proportional to 77,558.88, 106,807.50 and 74,015.94

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Solution

The fourth proportional to 77,558.88, 106,807.50 and 74,015.94 is: 101,928.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,558.88 : 106,807.50 = 74,015.94 : x
  2. Step 2: Convert to fraction form
    77,558.88/106,807.50 = 74,015.94/x
  3. Step 3: Cross multiply
    77,558.88x = 106,807.50 × 74,015.94
  4. Step 4: Simplify right side
    77,558.88x = 7,905,457,511.55
  5. Step 5: Solve for x
    x = 7,905,457,511.55/77,558.88
  6. Step 6: Final answer
    x = 101,928.46

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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.