Home / 56,756.71-78,324.80-31,263.18

Finding the Fourth Proportional to 56,756.71, 78,324.80 and 31,263.18

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Solution

The fourth proportional to 56,756.71, 78,324.80 and 31,263.18 is: 43,143.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,756.71 : 78,324.80 = 31,263.18 : x
  2. Step 2: Convert to fraction form
    56,756.71/78,324.80 = 31,263.18/x
  3. Step 3: Cross multiply
    56,756.71x = 78,324.80 × 31,263.18
  4. Step 4: Simplify right side
    56,756.71x = 2,448,682,320.86
  5. Step 5: Solve for x
    x = 2,448,682,320.86/56,756.71
  6. Step 6: Final answer
    x = 43,143.49

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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.