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Finding the Fourth Proportional to 66,044.80, 99,070.08 and 21,671.36

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Solution

The fourth proportional to 66,044.80, 99,070.08 and 21,671.36 is: 32,507.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,044.80 : 99,070.08 = 21,671.36 : x
  2. Step 2: Convert to fraction form
    66,044.80/99,070.08 = 21,671.36/x
  3. Step 3: Cross multiply
    66,044.80x = 99,070.08 × 21,671.36
  4. Step 4: Simplify right side
    66,044.80x = 2,146,983,368.91
  5. Step 5: Solve for x
    x = 2,146,983,368.91/66,044.80
  6. Step 6: Final answer
    x = 32,507.99

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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.