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Finding the Fourth Proportional to 78,345.71, 108,119.66 and 44,353.50

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Solution

The fourth proportional to 78,345.71, 108,119.66 and 44,353.50 is: 61,209.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,345.71 : 108,119.66 = 44,353.50 : x
  2. Step 2: Convert to fraction form
    78,345.71/108,119.66 = 44,353.50/x
  3. Step 3: Cross multiply
    78,345.71x = 108,119.66 × 44,353.50
  4. Step 4: Simplify right side
    78,345.71x = 4,795,485,266.17
  5. Step 5: Solve for x
    x = 4,795,485,266.17/78,345.71
  6. Step 6: Final answer
    x = 61,209.29

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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.