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Finding the Fourth Proportional to 48,663.36, 72,995.73 and 20,579.88

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Solution

The fourth proportional to 48,663.36, 72,995.73 and 20,579.88 is: 30,870.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,663.36 : 72,995.73 = 20,579.88 : x
  2. Step 2: Convert to fraction form
    48,663.36/72,995.73 = 20,579.88/x
  3. Step 3: Cross multiply
    48,663.36x = 72,995.73 × 20,579.88
  4. Step 4: Simplify right side
    48,663.36x = 1,502,243,363.91
  5. Step 5: Solve for x
    x = 1,502,243,363.91/48,663.36
  6. Step 6: Final answer
    x = 30,870.11

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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.