Home / 76,802.11-115,222.58-21,398.11

Finding the Fourth Proportional to 76,802.11, 115,222.58 and 21,398.11

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Solution

The fourth proportional to 76,802.11, 115,222.58 and 21,398.11 is: 32,102.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,802.11 : 115,222.58 = 21,398.11 : x
  2. Step 2: Convert to fraction form
    76,802.11/115,222.58 = 21,398.11/x
  3. Step 3: Cross multiply
    76,802.11x = 115,222.58 × 21,398.11
  4. Step 4: Simplify right side
    76,802.11x = 2,465,545,441.32
  5. Step 5: Solve for x
    x = 2,465,545,441.32/76,802.11
  6. Step 6: Final answer
    x = 32,102.57

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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.