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Finding the Fourth Proportional to 104,078.79, 143,629.08 and 56,332.11

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Solution

The fourth proportional to 104,078.79, 143,629.08 and 56,332.11 is: 77,738.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,078.79 : 143,629.08 = 56,332.11 : x
  2. Step 2: Convert to fraction form
    104,078.79/143,629.08 = 56,332.11/x
  3. Step 3: Cross multiply
    104,078.79x = 143,629.08 × 56,332.11
  4. Step 4: Simplify right side
    104,078.79x = 8,090,929,133.76
  5. Step 5: Solve for x
    x = 8,090,929,133.76/104,078.79
  6. Step 6: Final answer
    x = 77,738.50

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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.