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Finding the Fourth Proportional to 115,782.34, 159,787.02 and 64,800.94

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Solution

The fourth proportional to 115,782.34, 159,787.02 and 64,800.94 is: 89,429.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,782.34 : 159,787.02 = 64,800.94 : x
  2. Step 2: Convert to fraction form
    115,782.34/159,787.02 = 64,800.94/x
  3. Step 3: Cross multiply
    115,782.34x = 159,787.02 × 64,800.94
  4. Step 4: Simplify right side
    115,782.34x = 10,354,349,095.80
  5. Step 5: Solve for x
    x = 10,354,349,095.80/115,782.34
  6. Step 6: Final answer
    x = 89,429.43

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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.