Home / 66,209.90-99,320.96-18,825.98

Finding the Fourth Proportional to 66,209.90, 99,320.96 and 18,825.98

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Solution

The fourth proportional to 66,209.90, 99,320.96 and 18,825.98 is: 28,240.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,209.90 : 99,320.96 = 18,825.98 : x
  2. Step 2: Convert to fraction form
    66,209.90/99,320.96 = 18,825.98/x
  3. Step 3: Cross multiply
    66,209.90x = 99,320.96 × 18,825.98
  4. Step 4: Simplify right side
    66,209.90x = 1,869,813,957.00
  5. Step 5: Solve for x
    x = 1,869,813,957.00/66,209.90
  6. Step 6: Final answer
    x = 28,240.70

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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.