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Finding the Fourth Proportional to 48,480.88, 72,646.80 and 28,720.12

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Solution

The fourth proportional to 48,480.88, 72,646.80 and 28,720.12 is: 43,036.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,480.88 : 72,646.80 = 28,720.12 : x
  2. Step 2: Convert to fraction form
    48,480.88/72,646.80 = 28,720.12/x
  3. Step 3: Cross multiply
    48,480.88x = 72,646.80 × 28,720.12
  4. Step 4: Simplify right side
    48,480.88x = 2,086,424,813.62
  5. Step 5: Solve for x
    x = 2,086,424,813.62/48,480.88
  6. Step 6: Final answer
    x = 43,036.03

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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.