Home / 79,485.81-109,690.38-43,678.13

Finding the Fourth Proportional to 79,485.81, 109,690.38 and 43,678.13

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Solution

The fourth proportional to 79,485.81, 109,690.38 and 43,678.13 is: 60,275.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,485.81 : 109,690.38 = 43,678.13 : x
  2. Step 2: Convert to fraction form
    79,485.81/109,690.38 = 43,678.13/x
  3. Step 3: Cross multiply
    79,485.81x = 109,690.38 × 43,678.13
  4. Step 4: Simplify right side
    79,485.81x = 4,791,070,128.94
  5. Step 5: Solve for x
    x = 4,791,070,128.94/79,485.81
  6. Step 6: Final answer
    x = 60,275.79

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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.