Home / 78,725.46-108,637.11-42,911.94

Finding the Fourth Proportional to 78,725.46, 108,637.11 and 42,911.94

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Solution

The fourth proportional to 78,725.46, 108,637.11 and 42,911.94 is: 59,216.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,725.46 : 108,637.11 = 42,911.94 : x
  2. Step 2: Convert to fraction form
    78,725.46/108,637.11 = 42,911.94/x
  3. Step 3: Cross multiply
    78,725.46x = 108,637.11 × 42,911.94
  4. Step 4: Simplify right side
    78,725.46x = 4,661,829,146.09
  5. Step 5: Solve for x
    x = 4,661,829,146.09/78,725.46
  6. Step 6: Final answer
    x = 59,216.28

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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.