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Finding the Fourth Proportional to 48,354.71, 72,479.75 and 20,290.01

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Solution

The fourth proportional to 48,354.71, 72,479.75 and 20,290.01 is: 30,413.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,354.71 : 72,479.75 = 20,290.01 : x
  2. Step 2: Convert to fraction form
    48,354.71/72,479.75 = 20,290.01/x
  3. Step 3: Cross multiply
    48,354.71x = 72,479.75 × 20,290.01
  4. Step 4: Simplify right side
    48,354.71x = 1,470,614,388.45
  5. Step 5: Solve for x
    x = 1,470,614,388.45/48,354.71
  6. Step 6: Final answer
    x = 30,413.06

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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.