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Finding the Fourth Proportional to 78,975.99, 108,986.41 and 44,985.91

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Solution

The fourth proportional to 78,975.99, 108,986.41 and 44,985.91 is: 62,080.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,975.99 : 108,986.41 = 44,985.91 : x
  2. Step 2: Convert to fraction form
    78,975.99/108,986.41 = 44,985.91/x
  3. Step 3: Cross multiply
    78,975.99x = 108,986.41 × 44,985.91
  4. Step 4: Simplify right side
    78,975.99x = 4,902,852,513.07
  5. Step 5: Solve for x
    x = 4,902,852,513.07/78,975.99
  6. Step 6: Final answer
    x = 62,080.29

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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.