Home / 40,905.69-61,278.35-21,197.18

Finding the Fourth Proportional to 40,905.69, 61,278.35 and 21,197.18

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Solution

The fourth proportional to 40,905.69, 61,278.35 and 21,197.18 is: 31,754.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,905.69 : 61,278.35 = 21,197.18 : x
  2. Step 2: Convert to fraction form
    40,905.69/61,278.35 = 21,197.18/x
  3. Step 3: Cross multiply
    40,905.69x = 61,278.35 × 21,197.18
  4. Step 4: Simplify right side
    40,905.69x = 1,298,927,802.68
  5. Step 5: Solve for x
    x = 1,298,927,802.68/40,905.69
  6. Step 6: Final answer
    x = 31,754.21

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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.