Home / 66,118.20-99,177.28-19,371.06

Finding the Fourth Proportional to 66,118.20, 99,177.28 and 19,371.06

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Solution

The fourth proportional to 66,118.20, 99,177.28 and 19,371.06 is: 29,056.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,118.20 : 99,177.28 = 19,371.06 : x
  2. Step 2: Convert to fraction form
    66,118.20/99,177.28 = 19,371.06/x
  3. Step 3: Cross multiply
    66,118.20x = 99,177.28 × 19,371.06
  4. Step 4: Simplify right side
    66,118.20x = 1,921,169,041.52
  5. Step 5: Solve for x
    x = 1,921,169,041.52/66,118.20
  6. Step 6: Final answer
    x = 29,056.58

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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.