Home / 76,766.40-105,935.68-42,775.04

Finding the Fourth Proportional to 76,766.40, 105,935.68 and 42,775.04

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Solution

The fourth proportional to 76,766.40, 105,935.68 and 42,775.04 is: 59,028.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,766.40 : 105,935.68 = 42,775.04 : x
  2. Step 2: Convert to fraction form
    76,766.40/105,935.68 = 42,775.04/x
  3. Step 3: Cross multiply
    76,766.40x = 105,935.68 × 42,775.04
  4. Step 4: Simplify right side
    76,766.40x = 4,531,402,949.43
  5. Step 5: Solve for x
    x = 4,531,402,949.43/76,766.40
  6. Step 6: Final answer
    x = 59,028.47

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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.