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Finding the Fourth Proportional to 78,937.54, 108,895.83 and 57,393.90

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Solution

The fourth proportional to 78,937.54, 108,895.83 and 57,393.90 is: 79,175.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,937.54 : 108,895.83 = 57,393.90 : x
  2. Step 2: Convert to fraction form
    78,937.54/108,895.83 = 57,393.90/x
  3. Step 3: Cross multiply
    78,937.54x = 108,895.83 × 57,393.90
  4. Step 4: Simplify right side
    78,937.54x = 6,249,956,162.21
  5. Step 5: Solve for x
    x = 6,249,956,162.21/78,937.54
  6. Step 6: Final answer
    x = 79,175.97

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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.