Home / 76,308.88-105,309.66-42,315.08

Finding the Fourth Proportional to 76,308.88, 105,309.66 and 42,315.08

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Solution

The fourth proportional to 76,308.88, 105,309.66 and 42,315.08 is: 58,396.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,308.88 : 105,309.66 = 42,315.08 : x
  2. Step 2: Convert to fraction form
    76,308.88/105,309.66 = 42,315.08/x
  3. Step 3: Cross multiply
    76,308.88x = 105,309.66 × 42,315.08
  4. Step 4: Simplify right side
    76,308.88x = 4,456,187,237.44
  5. Step 5: Solve for x
    x = 4,456,187,237.44/76,308.88
  6. Step 6: Final answer
    x = 58,396.70

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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.