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Finding the Fourth Proportional to 112,960, 169,329.84 and 53,779.78

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Solution

The fourth proportional to 112,960, 169,329.84 and 53,779.78 is: 80,617.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,960 : 169,329.84 = 53,779.78 : x
  2. Step 2: Convert to fraction form
    112,960/169,329.84 = 53,779.78/x
  3. Step 3: Cross multiply
    112,960x = 169,329.84 × 53,779.78
  4. Step 4: Simplify right side
    112,960x = 9,106,521,542.64
  5. Step 5: Solve for x
    x = 9,106,521,542.64/112,960
  6. Step 6: Final answer
    x = 80,617.22

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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.