Home / 76,677.30-105,821.28-42,684.66

Finding the Fourth Proportional to 76,677.30, 105,821.28 and 42,684.66

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Solution

The fourth proportional to 76,677.30, 105,821.28 and 42,684.66 is: 58,908.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,677.30 : 105,821.28 = 42,684.66 : x
  2. Step 2: Convert to fraction form
    76,677.30/105,821.28 = 42,684.66/x
  3. Step 3: Cross multiply
    76,677.30x = 105,821.28 × 42,684.66
  4. Step 4: Simplify right side
    76,677.30x = 4,516,945,357.56
  5. Step 5: Solve for x
    x = 4,516,945,357.56/76,677.30
  6. Step 6: Final answer
    x = 58,908.51

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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.