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Finding the Fourth Proportional to 73,038.48, 109,269.48 and 55,320.20

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Solution

The fourth proportional to 73,038.48, 109,269.48 and 55,320.20 is: 82,761.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,038.48 : 109,269.48 = 55,320.20 : x
  2. Step 2: Convert to fraction form
    73,038.48/109,269.48 = 55,320.20/x
  3. Step 3: Cross multiply
    73,038.48x = 109,269.48 × 55,320.20
  4. Step 4: Simplify right side
    73,038.48x = 6,044,809,487.50
  5. Step 5: Solve for x
    x = 6,044,809,487.50/73,038.48
  6. Step 6: Final answer
    x = 82,761.98

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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.