Home / 56,871.27-78,483.09-31,378.68

Finding the Fourth Proportional to 56,871.27, 78,483.09 and 31,378.68

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Solution

The fourth proportional to 56,871.27, 78,483.09 and 31,378.68 is: 43,302.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,871.27 : 78,483.09 = 31,378.68 : x
  2. Step 2: Convert to fraction form
    56,871.27/78,483.09 = 31,378.68/x
  3. Step 3: Cross multiply
    56,871.27x = 78,483.09 × 31,378.68
  4. Step 4: Simplify right side
    56,871.27x = 2,462,695,766.52
  5. Step 5: Solve for x
    x = 2,462,695,766.52/56,871.27
  6. Step 6: Final answer
    x = 43,302.99

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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.