Home / 56,831.64-85,230.18-19,887

Finding the Fourth Proportional to 56,831.64, 85,230.18 and 19,887

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Solution

The fourth proportional to 56,831.64, 85,230.18 and 19,887 is: 29,824.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,831.64 : 85,230.18 = 19,887 : x
  2. Step 2: Convert to fraction form
    56,831.64/85,230.18 = 19,887/x
  3. Step 3: Cross multiply
    56,831.64x = 85,230.18 × 19,887
  4. Step 4: Simplify right side
    56,831.64x = 1,694,972,589.66
  5. Step 5: Solve for x
    x = 1,694,972,589.66/56,831.64
  6. Step 6: Final answer
    x = 29,824.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.