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Finding the Fourth Proportional to 66,779.82, 100,016.64 and 43,335.18

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Solution

The fourth proportional to 66,779.82, 100,016.64 and 43,335.18 is: 64,903.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,779.82 : 100,016.64 = 43,335.18 : x
  2. Step 2: Convert to fraction form
    66,779.82/100,016.64 = 43,335.18/x
  3. Step 3: Cross multiply
    66,779.82x = 100,016.64 × 43,335.18
  4. Step 4: Simplify right side
    66,779.82x = 4,334,239,097.40
  5. Step 5: Solve for x
    x = 4,334,239,097.40/66,779.82
  6. Step 6: Final answer
    x = 64,903.43

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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.