Home / 81,398.96-112,329.24-45,588.68

Finding the Fourth Proportional to 81,398.96, 112,329.24 and 45,588.68

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Solution

The fourth proportional to 81,398.96, 112,329.24 and 45,588.68 is: 62,911.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,398.96 : 112,329.24 = 45,588.68 : x
  2. Step 2: Convert to fraction form
    81,398.96/112,329.24 = 45,588.68/x
  3. Step 3: Cross multiply
    81,398.96x = 112,329.24 × 45,588.68
  4. Step 4: Simplify right side
    81,398.96x = 5,120,941,777.00
  5. Step 5: Solve for x
    x = 5,120,941,777.00/81,398.96
  6. Step 6: Final answer
    x = 62,911.64

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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.