Home / 66,279.72-99,422.64-18,898.02

Finding the Fourth Proportional to 66,279.72, 99,422.64 and 18,898.02

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Solution

The fourth proportional to 66,279.72, 99,422.64 and 18,898.02 is: 28,347.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,279.72 : 99,422.64 = 18,898.02 : x
  2. Step 2: Convert to fraction form
    66,279.72/99,422.64 = 18,898.02/x
  3. Step 3: Cross multiply
    66,279.72x = 99,422.64 × 18,898.02
  4. Step 4: Simplify right side
    66,279.72x = 1,878,891,039.17
  5. Step 5: Solve for x
    x = 1,878,891,039.17/66,279.72
  6. Step 6: Final answer
    x = 28,347.90

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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.