Home / 57,119.86-78,825.39-31,969.36

Finding the Fourth Proportional to 57,119.86, 78,825.39 and 31,969.36

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Solution

The fourth proportional to 57,119.86, 78,825.39 and 31,969.36 is: 44,117.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,119.86 : 78,825.39 = 31,969.36 : x
  2. Step 2: Convert to fraction form
    57,119.86/78,825.39 = 31,969.36/x
  3. Step 3: Cross multiply
    57,119.86x = 78,825.39 × 31,969.36
  4. Step 4: Simplify right side
    57,119.86x = 2,519,996,875.92
  5. Step 5: Solve for x
    x = 2,519,996,875.92/57,119.86
  6. Step 6: Final answer
    x = 44,117.70

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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.