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Finding the Fourth Proportional to 73,204.40, 109,741.80 and 65,331.20

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Solution

The fourth proportional to 73,204.40, 109,741.80 and 65,331.20 is: 97,938.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,204.40 : 109,741.80 = 65,331.20 : x
  2. Step 2: Convert to fraction form
    73,204.40/109,741.80 = 65,331.20/x
  3. Step 3: Cross multiply
    73,204.40x = 109,741.80 × 65,331.20
  4. Step 4: Simplify right side
    73,204.40x = 7,169,563,484.16
  5. Step 5: Solve for x
    x = 7,169,563,484.16/73,204.40
  6. Step 6: Final answer
    x = 97,938.97

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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.