Home / 78,029.15-107,680.72-45,757.19

Finding the Fourth Proportional to 78,029.15, 107,680.72 and 45,757.19

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Solution

The fourth proportional to 78,029.15, 107,680.72 and 45,757.19 is: 63,145.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,029.15 : 107,680.72 = 45,757.19 : x
  2. Step 2: Convert to fraction form
    78,029.15/107,680.72 = 45,757.19/x
  3. Step 3: Cross multiply
    78,029.15x = 107,680.72 × 45,757.19
  4. Step 4: Simplify right side
    78,029.15x = 4,927,167,490.78
  5. Step 5: Solve for x
    x = 4,927,167,490.78/78,029.15
  6. Step 6: Final answer
    x = 63,145.22

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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.