Home / 56,640.48-78,160.86-31,146.36

Finding the Fourth Proportional to 56,640.48, 78,160.86 and 31,146.36

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Solution

The fourth proportional to 56,640.48, 78,160.86 and 31,146.36 is: 42,980.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,640.48 : 78,160.86 = 31,146.36 : x
  2. Step 2: Convert to fraction form
    56,640.48/78,160.86 = 31,146.36/x
  3. Step 3: Cross multiply
    56,640.48x = 78,160.86 × 31,146.36
  4. Step 4: Simplify right side
    56,640.48x = 2,434,426,283.47
  5. Step 5: Solve for x
    x = 2,434,426,283.47/56,640.48
  6. Step 6: Final answer
    x = 42,980.33

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