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Finding the Fourth Proportional to 78,225.71, 107,953.61 and 44,239.28

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Solution

The fourth proportional to 78,225.71, 107,953.61 and 44,239.28 is: 61,051.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,225.71 : 107,953.61 = 44,239.28 : x
  2. Step 2: Convert to fraction form
    78,225.71/107,953.61 = 44,239.28/x
  3. Step 3: Cross multiply
    78,225.71x = 107,953.61 × 44,239.28
  4. Step 4: Simplify right side
    78,225.71x = 4,775,790,390.71
  5. Step 5: Solve for x
    x = 4,775,790,390.71/78,225.71
  6. Step 6: Final answer
    x = 61,051.41

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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.