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Finding the Fourth Proportional to 48,138.91, 72,225.46 and 21,482.47

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Solution

The fourth proportional to 48,138.91, 72,225.46 and 21,482.47 is: 32,231.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,138.91 : 72,225.46 = 21,482.47 : x
  2. Step 2: Convert to fraction form
    48,138.91/72,225.46 = 21,482.47/x
  3. Step 3: Cross multiply
    48,138.91x = 72,225.46 × 21,482.47
  4. Step 4: Simplify right side
    48,138.91x = 1,551,581,394.82
  5. Step 5: Solve for x
    x = 1,551,581,394.82/48,138.91
  6. Step 6: Final answer
    x = 32,231.34

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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.