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Finding the Fourth Proportional to 56,078.59, 84,117.73 and 13,957.89

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Solution

The fourth proportional to 56,078.59, 84,117.73 and 13,957.89 is: 20,936.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,078.59 : 84,117.73 = 13,957.89 : x
  2. Step 2: Convert to fraction form
    56,078.59/84,117.73 = 13,957.89/x
  3. Step 3: Cross multiply
    56,078.59x = 84,117.73 × 13,957.89
  4. Step 4: Simplify right side
    56,078.59x = 1,174,106,022.39
  5. Step 5: Solve for x
    x = 1,174,106,022.39/56,078.59
  6. Step 6: Final answer
    x = 20,936.80

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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.