Home / 57,119.27-78,822-31,623.83

Finding the Fourth Proportional to 57,119.27, 78,822 and 31,623.83

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Solution

The fourth proportional to 57,119.27, 78,822 and 31,623.83 is: 43,639.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,119.27 : 78,822 = 31,623.83 : x
  2. Step 2: Convert to fraction form
    57,119.27/78,822 = 31,623.83/x
  3. Step 3: Cross multiply
    57,119.27x = 78,822 × 31,623.83
  4. Step 4: Simplify right side
    57,119.27x = 2,492,653,528.26
  5. Step 5: Solve for x
    x = 2,492,653,528.26/57,119.27
  6. Step 6: Final answer
    x = 43,639.45

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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.