Home / 56,831.90-78,399.20-43,379.80

Finding the Fourth Proportional to 56,831.90, 78,399.20 and 43,379.80

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Solution

The fourth proportional to 56,831.90, 78,399.20 and 43,379.80 is: 59,842.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,831.90 : 78,399.20 = 43,379.80 : x
  2. Step 2: Convert to fraction form
    56,831.90/78,399.20 = 43,379.80/x
  3. Step 3: Cross multiply
    56,831.90x = 78,399.20 × 43,379.80
  4. Step 4: Simplify right side
    56,831.90x = 3,400,941,616.16
  5. Step 5: Solve for x
    x = 3,400,941,616.16/56,831.90
  6. Step 6: Final answer
    x = 59,842.12

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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.