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Finding the Fourth Proportional to 76,160.30, 105,245.80 and 57,264.62

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Solution

The fourth proportional to 76,160.30, 105,245.80 and 57,264.62 is: 79,133.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,160.30 : 105,245.80 = 57,264.62 : x
  2. Step 2: Convert to fraction form
    76,160.30/105,245.80 = 57,264.62/x
  3. Step 3: Cross multiply
    76,160.30x = 105,245.80 × 57,264.62
  4. Step 4: Simplify right side
    76,160.30x = 6,026,860,743.60
  5. Step 5: Solve for x
    x = 6,026,860,743.60/76,160.30
  6. Step 6: Final answer
    x = 79,133.89

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.