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Finding the Fourth Proportional to 72,495.60, 108,743.40 and 66,044.40

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Solution

The fourth proportional to 72,495.60, 108,743.40 and 66,044.40 is: 99,066.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,495.60 : 108,743.40 = 66,044.40 : x
  2. Step 2: Convert to fraction form
    72,495.60/108,743.40 = 66,044.40/x
  3. Step 3: Cross multiply
    72,495.60x = 108,743.40 × 66,044.40
  4. Step 4: Simplify right side
    72,495.60x = 7,181,892,606.96
  5. Step 5: Solve for x
    x = 7,181,892,606.96/72,495.60
  6. Step 6: Final answer
    x = 99,066.60

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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.