Home / 82,939.36-114,456-45,215.68

Finding the Fourth Proportional to 82,939.36, 114,456 and 45,215.68

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Solution

The fourth proportional to 82,939.36, 114,456 and 45,215.68 is: 62,397.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,939.36 : 114,456 = 45,215.68 : x
  2. Step 2: Convert to fraction form
    82,939.36/114,456 = 45,215.68/x
  3. Step 3: Cross multiply
    82,939.36x = 114,456 × 45,215.68
  4. Step 4: Simplify right side
    82,939.36x = 5,175,205,870.08
  5. Step 5: Solve for x
    x = 5,175,205,870.08/82,939.36
  6. Step 6: Final answer
    x = 62,397.47

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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.