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Finding the Fourth Proportional to 78,318.25, 108,079.32 and 44,784.25

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Solution

The fourth proportional to 78,318.25, 108,079.32 and 44,784.25 is: 61,802.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,318.25 : 108,079.32 = 44,784.25 : x
  2. Step 2: Convert to fraction form
    78,318.25/108,079.32 = 44,784.25/x
  3. Step 3: Cross multiply
    78,318.25x = 108,079.32 × 44,784.25
  4. Step 4: Simplify right side
    78,318.25x = 4,840,251,286.71
  5. Step 5: Solve for x
    x = 4,840,251,286.71/78,318.25
  6. Step 6: Final answer
    x = 61,802.34

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1.5x scale

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.