Home / 75,110.40-103,636.80-57,173.76

Finding the Fourth Proportional to 75,110.40, 103,636.80 and 57,173.76

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Solution

The fourth proportional to 75,110.40, 103,636.80 and 57,173.76 is: 78,887.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,110.40 : 103,636.80 = 57,173.76 : x
  2. Step 2: Convert to fraction form
    75,110.40/103,636.80 = 57,173.76/x
  3. Step 3: Cross multiply
    75,110.40x = 103,636.80 × 57,173.76
  4. Step 4: Simplify right side
    75,110.40x = 5,925,305,530.37
  5. Step 5: Solve for x
    x = 5,925,305,530.37/75,110.40
  6. Step 6: Final answer
    x = 78,887.95

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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.