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Finding the Fourth Proportional to 78,337.44, 117,515.52 and 36,774.72

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Solution

The fourth proportional to 78,337.44, 117,515.52 and 36,774.72 is: 55,166.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,337.44 : 117,515.52 = 36,774.72 : x
  2. Step 2: Convert to fraction form
    78,337.44/117,515.52 = 36,774.72/x
  3. Step 3: Cross multiply
    78,337.44x = 117,515.52 × 36,774.72
  4. Step 4: Simplify right side
    78,337.44x = 4,321,600,343.65
  5. Step 5: Solve for x
    x = 4,321,600,343.65/78,337.44
  6. Step 6: Final answer
    x = 55,166.47

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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.