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Finding the Fourth Proportional to 45,153.63, 67,753.65 and 21,488.01

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Solution

The fourth proportional to 45,153.63, 67,753.65 and 21,488.01 is: 32,243.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,153.63 : 67,753.65 = 21,488.01 : x
  2. Step 2: Convert to fraction form
    45,153.63/67,753.65 = 21,488.01/x
  3. Step 3: Cross multiply
    45,153.63x = 67,753.65 × 21,488.01
  4. Step 4: Simplify right side
    45,153.63x = 1,455,891,108.74
  5. Step 5: Solve for x
    x = 1,455,891,108.74/45,153.63
  6. Step 6: Final answer
    x = 32,243.06

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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.