Home / 76,842.17-115,256.77-43,457.21

Finding the Fourth Proportional to 76,842.17, 115,256.77 and 43,457.21

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Solution

The fourth proportional to 76,842.17, 115,256.77 and 43,457.21 is: 65,182.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,842.17 : 115,256.77 = 43,457.21 : x
  2. Step 2: Convert to fraction form
    76,842.17/115,256.77 = 43,457.21/x
  3. Step 3: Cross multiply
    76,842.17x = 115,256.77 × 43,457.21
  4. Step 4: Simplify right side
    76,842.17x = 5,008,736,864.24
  5. Step 5: Solve for x
    x = 5,008,736,864.24/76,842.17
  6. Step 6: Final answer
    x = 65,182.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.