Home / 57,208.97-78,941.07-31,715.10

Finding the Fourth Proportional to 57,208.97, 78,941.07 and 31,715.10

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Solution

The fourth proportional to 57,208.97, 78,941.07 and 31,715.10 is: 43,762.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,208.97 : 78,941.07 = 31,715.10 : x
  2. Step 2: Convert to fraction form
    57,208.97/78,941.07 = 31,715.10/x
  3. Step 3: Cross multiply
    57,208.97x = 78,941.07 × 31,715.10
  4. Step 4: Simplify right side
    57,208.97x = 2,503,623,929.16
  5. Step 5: Solve for x
    x = 2,503,623,929.16/57,208.97
  6. Step 6: Final answer
    x = 43,762.79

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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.