Home / 81,568.10-112,649.39-56,140.11

Finding the Fourth Proportional to 81,568.10, 112,649.39 and 56,140.11

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Solution

The fourth proportional to 81,568.10, 112,649.39 and 56,140.11 is: 77,532.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,568.10 : 112,649.39 = 56,140.11 : x
  2. Step 2: Convert to fraction form
    81,568.10/112,649.39 = 56,140.11/x
  3. Step 3: Cross multiply
    81,568.10x = 112,649.39 × 56,140.11
  4. Step 4: Simplify right side
    81,568.10x = 6,324,148,865.33
  5. Step 5: Solve for x
    x = 6,324,148,865.33/81,568.10
  6. Step 6: Final answer
    x = 77,532.14

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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.