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Finding the Fourth Proportional to 78,559, 108,411.44 and 45,025

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Solution

The fourth proportional to 78,559, 108,411.44 and 45,025 is: 62,134.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,559 : 108,411.44 = 45,025 : x
  2. Step 2: Convert to fraction form
    78,559/108,411.44 = 45,025/x
  3. Step 3: Cross multiply
    78,559x = 108,411.44 × 45,025
  4. Step 4: Simplify right side
    78,559x = 4,881,225,086
  5. Step 5: Solve for x
    x = 4,881,225,086/78,559
  6. Step 6: Final answer
    x = 62,134.51

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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.