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Finding the Fourth Proportional to 73,152.60, 109,663.20 and 28,809.60

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Solution

The fourth proportional to 73,152.60, 109,663.20 and 28,809.60 is: 43,188.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,152.60 : 109,663.20 = 28,809.60 : x
  2. Step 2: Convert to fraction form
    73,152.60/109,663.20 = 28,809.60/x
  3. Step 3: Cross multiply
    73,152.60x = 109,663.20 × 28,809.60
  4. Step 4: Simplify right side
    73,152.60x = 3,159,352,926.72
  5. Step 5: Solve for x
    x = 3,159,352,926.72/73,152.60
  6. Step 6: Final answer
    x = 43,188.53

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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.