Home / 66,156.54-99,238.05-19,405.50

Finding the Fourth Proportional to 66,156.54, 99,238.05 and 19,405.50

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Solution

The fourth proportional to 66,156.54, 99,238.05 and 19,405.50 is: 29,109.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,156.54 : 99,238.05 = 19,405.50 : x
  2. Step 2: Convert to fraction form
    66,156.54/99,238.05 = 19,405.50/x
  3. Step 3: Cross multiply
    66,156.54x = 99,238.05 × 19,405.50
  4. Step 4: Simplify right side
    66,156.54x = 1,925,763,979.28
  5. Step 5: Solve for x
    x = 1,925,763,979.28/66,156.54
  6. Step 6: Final answer
    x = 29,109.20

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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.