Home / 85,708.55-118,284.50-49,421.66

Finding the Fourth Proportional to 85,708.55, 118,284.50 and 49,421.66

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Solution

The fourth proportional to 85,708.55, 118,284.50 and 49,421.66 is: 68,205.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,708.55 : 118,284.50 = 49,421.66 : x
  2. Step 2: Convert to fraction form
    85,708.55/118,284.50 = 49,421.66/x
  3. Step 3: Cross multiply
    85,708.55x = 118,284.50 × 49,421.66
  4. Step 4: Simplify right side
    85,708.55x = 5,845,815,874.40
  5. Step 5: Solve for x
    x = 5,845,815,874.40/85,708.55
  6. Step 6: Final answer
    x = 68,205.75

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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.