Home / 81,187.41-112,043.88-45,378.93

Finding the Fourth Proportional to 81,187.41, 112,043.88 and 45,378.93

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Solution

The fourth proportional to 81,187.41, 112,043.88 and 45,378.93 is: 62,625.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,187.41 : 112,043.88 = 45,378.93 : x
  2. Step 2: Convert to fraction form
    81,187.41/112,043.88 = 45,378.93/x
  3. Step 3: Cross multiply
    81,187.41x = 112,043.88 × 45,378.93
  4. Step 4: Simplify right side
    81,187.41x = 5,084,431,387.45
  5. Step 5: Solve for x
    x = 5,084,431,387.45/81,187.41
  6. Step 6: Final answer
    x = 62,625.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.