Home / 78,007.64-107,616.36-45,725.90

Finding the Fourth Proportional to 78,007.64, 107,616.36 and 45,725.90

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Solution

The fourth proportional to 78,007.64, 107,616.36 and 45,725.90 is: 63,081.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,007.64 : 107,616.36 = 45,725.90 : x
  2. Step 2: Convert to fraction form
    78,007.64/107,616.36 = 45,725.90/x
  3. Step 3: Cross multiply
    78,007.64x = 107,616.36 × 45,725.90
  4. Step 4: Simplify right side
    78,007.64x = 4,920,854,377.64
  5. Step 5: Solve for x
    x = 4,920,854,377.64/78,007.64
  6. Step 6: Final answer
    x = 63,081.70

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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.