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Finding the Fourth Proportional to 48,053.35, 72,079.85 and 12,993

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Solution

The fourth proportional to 48,053.35, 72,079.85 and 12,993 is: 19,489.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,053.35 : 72,079.85 = 12,993 : x
  2. Step 2: Convert to fraction form
    48,053.35/72,079.85 = 12,993/x
  3. Step 3: Cross multiply
    48,053.35x = 72,079.85 × 12,993
  4. Step 4: Simplify right side
    48,053.35x = 936,533,491.05
  5. Step 5: Solve for x
    x = 936,533,491.05/48,053.35
  6. Step 6: Final answer
    x = 19,489.45

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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.