Home / 66,089.12-99,149.28-21,716

Finding the Fourth Proportional to 66,089.12, 99,149.28 and 21,716

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Solution

The fourth proportional to 66,089.12, 99,149.28 and 21,716 is: 32,579.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,089.12 : 99,149.28 = 21,716 : x
  2. Step 2: Convert to fraction form
    66,089.12/99,149.28 = 21,716/x
  3. Step 3: Cross multiply
    66,089.12x = 99,149.28 × 21,716
  4. Step 4: Simplify right side
    66,089.12x = 2,153,125,764.48
  5. Step 5: Solve for x
    x = 2,153,125,764.48/66,089.12
  6. Step 6: Final answer
    x = 32,579.13

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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.