Home / 42,616.60-63,940.48-19,831.31

Finding the Fourth Proportional to 42,616.60, 63,940.48 and 19,831.31

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Solution

The fourth proportional to 42,616.60, 63,940.48 and 19,831.31 is: 29,754.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,616.60 : 63,940.48 = 19,831.31 : x
  2. Step 2: Convert to fraction form
    42,616.60/63,940.48 = 19,831.31/x
  3. Step 3: Cross multiply
    42,616.60x = 63,940.48 × 19,831.31
  4. Step 4: Simplify right side
    42,616.60x = 1,268,023,381.27
  5. Step 5: Solve for x
    x = 1,268,023,381.27/42,616.60
  6. Step 6: Final answer
    x = 29,754.22

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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.