Home / 79,699.06-109,985.42-43,890.36

Finding the Fourth Proportional to 79,699.06, 109,985.42 and 43,890.36

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Solution

The fourth proportional to 79,699.06, 109,985.42 and 43,890.36 is: 60,569.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,699.06 : 109,985.42 = 43,890.36 : x
  2. Step 2: Convert to fraction form
    79,699.06/109,985.42 = 43,890.36/x
  3. Step 3: Cross multiply
    79,699.06x = 109,985.42 × 43,890.36
  4. Step 4: Simplify right side
    79,699.06x = 4,827,299,678.55
  5. Step 5: Solve for x
    x = 4,827,299,678.55/79,699.06
  6. Step 6: Final answer
    x = 60,569.09

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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.