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Finding the Fourth Proportional to 76,941.60, 115,428.60 and 24,356.40

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Solution

The fourth proportional to 76,941.60, 115,428.60 and 24,356.40 is: 36,539.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,941.60 : 115,428.60 = 24,356.40 : x
  2. Step 2: Convert to fraction form
    76,941.60/115,428.60 = 24,356.40/x
  3. Step 3: Cross multiply
    76,941.60x = 115,428.60 × 24,356.40
  4. Step 4: Simplify right side
    76,941.60x = 2,811,425,153.04
  5. Step 5: Solve for x
    x = 2,811,425,153.04/76,941.60
  6. Step 6: Final answer
    x = 36,539.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.