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Finding the Fourth Proportional to 77,366.60, 115,940.55 and 47,696.30

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Solution

The fourth proportional to 77,366.60, 115,940.55 and 47,696.30 is: 71,477.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,366.60 : 115,940.55 = 47,696.30 : x
  2. Step 2: Convert to fraction form
    77,366.60/115,940.55 = 47,696.30/x
  3. Step 3: Cross multiply
    77,366.60x = 115,940.55 × 47,696.30
  4. Step 4: Simplify right side
    77,366.60x = 5,529,935,254.97
  5. Step 5: Solve for x
    x = 5,529,935,254.97/77,366.60
  6. Step 6: Final answer
    x = 71,477.04

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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.