Home / 97,986.42-135,221.22-55,547.64

Finding the Fourth Proportional to 97,986.42, 135,221.22 and 55,547.64

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Solution

The fourth proportional to 97,986.42, 135,221.22 and 55,547.64 is: 76,655.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,986.42 : 135,221.22 = 55,547.64 : x
  2. Step 2: Convert to fraction form
    97,986.42/135,221.22 = 55,547.64/x
  3. Step 3: Cross multiply
    97,986.42x = 135,221.22 × 55,547.64
  4. Step 4: Simplify right side
    97,986.42x = 7,511,219,648.92
  5. Step 5: Solve for x
    x = 7,511,219,648.92/97,986.42
  6. Step 6: Final answer
    x = 76,655.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.