Home / 76,309.36-105,304.94-42,317.30

Finding the Fourth Proportional to 76,309.36, 105,304.94 and 42,317.30

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Solution

The fourth proportional to 76,309.36, 105,304.94 and 42,317.30 is: 58,396.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,309.36 : 105,304.94 = 42,317.30 : x
  2. Step 2: Convert to fraction form
    76,309.36/105,304.94 = 42,317.30/x
  3. Step 3: Cross multiply
    76,309.36x = 105,304.94 × 42,317.30
  4. Step 4: Simplify right side
    76,309.36x = 4,456,220,737.46
  5. Step 5: Solve for x
    x = 4,456,220,737.46/76,309.36
  6. Step 6: Final answer
    x = 58,396.78

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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.