Home / 79,455.10-109,657.80-45,921.10

Finding the Fourth Proportional to 79,455.10, 109,657.80 and 45,921.10

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Solution

The fourth proportional to 79,455.10, 109,657.80 and 45,921.10 is: 63,376.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,455.10 : 109,657.80 = 45,921.10 : x
  2. Step 2: Convert to fraction form
    79,455.10/109,657.80 = 45,921.10/x
  3. Step 3: Cross multiply
    79,455.10x = 109,657.80 × 45,921.10
  4. Step 4: Simplify right side
    79,455.10x = 5,035,606,799.58
  5. Step 5: Solve for x
    x = 5,035,606,799.58/79,455.10
  6. Step 6: Final answer
    x = 63,376.76

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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.