Home / 81,066.17-111,870.28-45,256.78

Finding the Fourth Proportional to 81,066.17, 111,870.28 and 45,256.78

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Solution

The fourth proportional to 81,066.17, 111,870.28 and 45,256.78 is: 62,453.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,066.17 : 111,870.28 = 45,256.78 : x
  2. Step 2: Convert to fraction form
    81,066.17/111,870.28 = 45,256.78/x
  3. Step 3: Cross multiply
    81,066.17x = 111,870.28 × 45,256.78
  4. Step 4: Simplify right side
    81,066.17x = 5,062,888,650.50
  5. Step 5: Solve for x
    x = 5,062,888,650.50/81,066.17
  6. Step 6: Final answer
    x = 62,453.78

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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.