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Finding the Fourth Proportional to 78,518.08, 108,356 and 44,984

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Solution

The fourth proportional to 78,518.08, 108,356 and 44,984 is: 62,078.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,518.08 : 108,356 = 44,984 : x
  2. Step 2: Convert to fraction form
    78,518.08/108,356 = 44,984/x
  3. Step 3: Cross multiply
    78,518.08x = 108,356 × 44,984
  4. Step 4: Simplify right side
    78,518.08x = 4,874,286,304
  5. Step 5: Solve for x
    x = 4,874,286,304/78,518.08
  6. Step 6: Final answer
    x = 62,078.52

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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.