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Finding the Fourth Proportional to 48,159.70, 72,238.20 and 21,864.40

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Solution

The fourth proportional to 48,159.70, 72,238.20 and 21,864.40 is: 32,795.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,159.70 : 72,238.20 = 21,864.40 : x
  2. Step 2: Convert to fraction form
    48,159.70/72,238.20 = 21,864.40/x
  3. Step 3: Cross multiply
    48,159.70x = 72,238.20 × 21,864.40
  4. Step 4: Simplify right side
    48,159.70x = 1,579,444,900.08
  5. Step 5: Solve for x
    x = 1,579,444,900.08/48,159.70
  6. Step 6: Final answer
    x = 32,795.99

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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.