Home / 91,561.54-137,363.73-28,378.36

Finding the Fourth Proportional to 91,561.54, 137,363.73 and 28,378.36

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Solution

The fourth proportional to 91,561.54, 137,363.73 and 28,378.36 is: 42,574.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,561.54 : 137,363.73 = 28,378.36 : x
  2. Step 2: Convert to fraction form
    91,561.54/137,363.73 = 28,378.36/x
  3. Step 3: Cross multiply
    91,561.54x = 137,363.73 × 28,378.36
  4. Step 4: Simplify right side
    91,561.54x = 3,898,157,380.88
  5. Step 5: Solve for x
    x = 3,898,157,380.88/91,561.54
  6. Step 6: Final answer
    x = 42,574.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.