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Finding the Fourth Proportional to 78,479.58, 117,701.55 and 22,318.38

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Solution

The fourth proportional to 78,479.58, 117,701.55 and 22,318.38 is: 33,472.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,479.58 : 117,701.55 = 22,318.38 : x
  2. Step 2: Convert to fraction form
    78,479.58/117,701.55 = 22,318.38/x
  3. Step 3: Cross multiply
    78,479.58x = 117,701.55 × 22,318.38
  4. Step 4: Simplify right side
    78,479.58x = 2,626,907,919.49
  5. Step 5: Solve for x
    x = 2,626,907,919.49/78,479.58
  6. Step 6: Final answer
    x = 33,472.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.