Home / 76,968.96-115,457.92-21,569.28

Finding the Fourth Proportional to 76,968.96, 115,457.92 and 21,569.28

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Solution

The fourth proportional to 76,968.96, 115,457.92 and 21,569.28 is: 32,355.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,968.96 : 115,457.92 = 21,569.28 : x
  2. Step 2: Convert to fraction form
    76,968.96/115,457.92 = 21,569.28/x
  3. Step 3: Cross multiply
    76,968.96x = 115,457.92 × 21,569.28
  4. Step 4: Simplify right side
    76,968.96x = 2,490,344,204.70
  5. Step 5: Solve for x
    x = 2,490,344,204.70/76,968.96
  6. Step 6: Final answer
    x = 32,355.18

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1.5x scale

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.