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Finding the Fourth Proportional to 78,009.28, 107,653.86 and 44,019.45

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Solution

The fourth proportional to 78,009.28, 107,653.86 and 44,019.45 is: 60,747.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,009.28 : 107,653.86 = 44,019.45 : x
  2. Step 2: Convert to fraction form
    78,009.28/107,653.86 = 44,019.45/x
  3. Step 3: Cross multiply
    78,009.28x = 107,653.86 × 44,019.45
  4. Step 4: Simplify right side
    78,009.28x = 4,738,863,707.58
  5. Step 5: Solve for x
    x = 4,738,863,707.58/78,009.28
  6. Step 6: Final answer
    x = 60,747.44

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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.