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Finding the Fourth Proportional to 94,078, 129,822.94 and 55,839.21

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Solution

The fourth proportional to 94,078, 129,822.94 and 55,839.21 is: 77,055.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,078 : 129,822.94 = 55,839.21 : x
  2. Step 2: Convert to fraction form
    94,078/129,822.94 = 55,839.21/x
  3. Step 3: Cross multiply
    94,078x = 129,822.94 × 55,839.21
  4. Step 4: Simplify right side
    94,078x = 7,249,210,409.48
  5. Step 5: Solve for x
    x = 7,249,210,409.48/94,078
  6. Step 6: Final answer
    x = 77,055.32

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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.