Home / 81,172.07-121,632.49-56,260.79

Finding the Fourth Proportional to 81,172.07, 121,632.49 and 56,260.79

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Solution

The fourth proportional to 81,172.07, 121,632.49 and 56,260.79 is: 84,304.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,172.07 : 121,632.49 = 56,260.79 : x
  2. Step 2: Convert to fraction form
    81,172.07/121,632.49 = 56,260.79/x
  3. Step 3: Cross multiply
    81,172.07x = 121,632.49 × 56,260.79
  4. Step 4: Simplify right side
    81,172.07x = 6,843,139,977.07
  5. Step 5: Solve for x
    x = 6,843,139,977.07/81,172.07
  6. Step 6: Final answer
    x = 84,304.12

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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.