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Finding the Fourth Proportional to 93,228.88, 128,655.66 and 50,787.31

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Solution

The fourth proportional to 93,228.88, 128,655.66 and 50,787.31 is: 70,086.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,228.88 : 128,655.66 = 50,787.31 : x
  2. Step 2: Convert to fraction form
    93,228.88/128,655.66 = 50,787.31/x
  3. Step 3: Cross multiply
    93,228.88x = 128,655.66 × 50,787.31
  4. Step 4: Simplify right side
    93,228.88x = 6,534,074,887.67
  5. Step 5: Solve for x
    x = 6,534,074,887.67/93,228.88
  6. Step 6: Final answer
    x = 70,086.38

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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.