Home / 81,187.24-121,474.62-47,925.40

Finding the Fourth Proportional to 81,187.24, 121,474.62 and 47,925.40

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Solution

The fourth proportional to 81,187.24, 121,474.62 and 47,925.40 is: 71,707.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,187.24 : 121,474.62 = 47,925.40 : x
  2. Step 2: Convert to fraction form
    81,187.24/121,474.62 = 47,925.40/x
  3. Step 3: Cross multiply
    81,187.24x = 121,474.62 × 47,925.40
  4. Step 4: Simplify right side
    81,187.24x = 5,821,719,753.35
  5. Step 5: Solve for x
    x = 5,821,719,753.35/81,187.24
  6. Step 6: Final answer
    x = 71,707.32

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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.