Home / 81,436.11-122,170.25-39,345.45

Finding the Fourth Proportional to 81,436.11, 122,170.25 and 39,345.45

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Solution

The fourth proportional to 81,436.11, 122,170.25 and 39,345.45 is: 59,025.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,436.11 : 122,170.25 = 39,345.45 : x
  2. Step 2: Convert to fraction form
    81,436.11/122,170.25 = 39,345.45/x
  3. Step 3: Cross multiply
    81,436.11x = 122,170.25 × 39,345.45
  4. Step 4: Simplify right side
    81,436.11x = 4,806,843,462.86
  5. Step 5: Solve for x
    x = 4,806,843,462.86/81,436.11
  6. Step 6: Final answer
    x = 59,025.95

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1.5x scale

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.