Home / 81,105.74-111,926.16-45,297.12

Finding the Fourth Proportional to 81,105.74, 111,926.16 and 45,297.12

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Solution

The fourth proportional to 81,105.74, 111,926.16 and 45,297.12 is: 62,510.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,105.74 : 111,926.16 = 45,297.12 : x
  2. Step 2: Convert to fraction form
    81,105.74/111,926.16 = 45,297.12/x
  3. Step 3: Cross multiply
    81,105.74x = 111,926.16 × 45,297.12
  4. Step 4: Simplify right side
    81,105.74x = 5,069,932,700.66
  5. Step 5: Solve for x
    x = 5,069,932,700.66/81,105.74
  6. Step 6: Final answer
    x = 62,510.16

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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.