Home / 81,410.11-121,904.86-56,187.48

Finding the Fourth Proportional to 81,410.11, 121,904.86 and 56,187.48

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Solution

The fourth proportional to 81,410.11, 121,904.86 and 56,187.48 is: 84,136.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,410.11 : 121,904.86 = 56,187.48 : x
  2. Step 2: Convert to fraction form
    81,410.11/121,904.86 = 56,187.48/x
  3. Step 3: Cross multiply
    81,410.11x = 121,904.86 × 56,187.48
  4. Step 4: Simplify right side
    81,410.11x = 6,849,526,883.15
  5. Step 5: Solve for x
    x = 6,849,526,883.15/81,410.11
  6. Step 6: Final answer
    x = 84,136.07

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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.