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Finding the Fourth Proportional to 78,466.52, 117,751.62 and 36,916.76

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Solution

The fourth proportional to 78,466.52, 117,751.62 and 36,916.76 is: 55,399.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,466.52 : 117,751.62 = 36,916.76 : x
  2. Step 2: Convert to fraction form
    78,466.52/117,751.62 = 36,916.76/x
  3. Step 3: Cross multiply
    78,466.52x = 117,751.62 × 36,916.76
  4. Step 4: Simplify right side
    78,466.52x = 4,347,008,295.15
  5. Step 5: Solve for x
    x = 4,347,008,295.15/78,466.52
  6. Step 6: Final answer
    x = 55,399.53

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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.