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Finding the Fourth Proportional to 48,987.17, 73,506.04 and 20,899.68

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Solution

The fourth proportional to 48,987.17, 73,506.04 and 20,899.68 is: 31,360.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,987.17 : 73,506.04 = 20,899.68 : x
  2. Step 2: Convert to fraction form
    48,987.17/73,506.04 = 20,899.68/x
  3. Step 3: Cross multiply
    48,987.17x = 73,506.04 × 20,899.68
  4. Step 4: Simplify right side
    48,987.17x = 1,536,252,937.47
  5. Step 5: Solve for x
    x = 1,536,252,937.47/48,987.17
  6. Step 6: Final answer
    x = 31,360.31

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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.