Home / 91,291.12-137,007.32-59,692.61

Finding the Fourth Proportional to 91,291.12, 137,007.32 and 59,692.61

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Solution

The fourth proportional to 91,291.12, 137,007.32 and 59,692.61 is: 89,585.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,291.12 : 137,007.32 = 59,692.61 : x
  2. Step 2: Convert to fraction form
    91,291.12/137,007.32 = 59,692.61/x
  3. Step 3: Cross multiply
    91,291.12x = 137,007.32 × 59,692.61
  4. Step 4: Simplify right side
    91,291.12x = 8,178,324,563.96
  5. Step 5: Solve for x
    x = 8,178,324,563.96/91,291.12
  6. Step 6: Final answer
    x = 89,585.11

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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.