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Finding the Fourth Proportional to 102,644.60, 141,648.84 and 57,319.88

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Solution

The fourth proportional to 102,644.60, 141,648.84 and 57,319.88 is: 79,101.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,644.60 : 141,648.84 = 57,319.88 : x
  2. Step 2: Convert to fraction form
    102,644.60/141,648.84 = 57,319.88/x
  3. Step 3: Cross multiply
    102,644.60x = 141,648.84 × 57,319.88
  4. Step 4: Simplify right side
    102,644.60x = 8,119,294,510.94
  5. Step 5: Solve for x
    x = 8,119,294,510.94/102,644.60
  6. Step 6: Final answer
    x = 79,101.04

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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.