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Finding the Fourth Proportional to 78,251.40, 107,989.37 and 44,259.22

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Solution

The fourth proportional to 78,251.40, 107,989.37 and 44,259.22 is: 61,079.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,251.40 : 107,989.37 = 44,259.22 : x
  2. Step 2: Convert to fraction form
    78,251.40/107,989.37 = 44,259.22/x
  3. Step 3: Cross multiply
    78,251.40x = 107,989.37 × 44,259.22
  4. Step 4: Simplify right side
    78,251.40x = 4,779,525,284.49
  5. Step 5: Solve for x
    x = 4,779,525,284.49/78,251.40
  6. Step 6: Final answer
    x = 61,079.11

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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.