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Finding the Fourth Proportional to 66,377.74, 99,529.69 and 21,980.27

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Solution

The fourth proportional to 66,377.74, 99,529.69 and 21,980.27 is: 32,958.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,377.74 : 99,529.69 = 21,980.27 : x
  2. Step 2: Convert to fraction form
    66,377.74/99,529.69 = 21,980.27/x
  3. Step 3: Cross multiply
    66,377.74x = 99,529.69 × 21,980.27
  4. Step 4: Simplify right side
    66,377.74x = 2,187,689,459.22
  5. Step 5: Solve for x
    x = 2,187,689,459.22/66,377.74
  6. Step 6: Final answer
    x = 32,958.18

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1.5x scale

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.