Home / 71,677.67-98,906.54-39,406.95

Finding the Fourth Proportional to 71,677.67, 98,906.54 and 39,406.95

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Solution

The fourth proportional to 71,677.67, 98,906.54 and 39,406.95 is: 54,376.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,677.67 : 98,906.54 = 39,406.95 : x
  2. Step 2: Convert to fraction form
    71,677.67/98,906.54 = 39,406.95/x
  3. Step 3: Cross multiply
    71,677.67x = 98,906.54 × 39,406.95
  4. Step 4: Simplify right side
    71,677.67x = 3,897,604,879.42
  5. Step 5: Solve for x
    x = 3,897,604,879.42/71,677.67
  6. Step 6: Final answer
    x = 54,376.84

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1.5x scale

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.