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Finding the Fourth Proportional to 80,285.61, 110,731.77 and 54,812.51

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Solution

The fourth proportional to 80,285.61, 110,731.77 and 54,812.51 is: 75,598.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,285.61 : 110,731.77 = 54,812.51 : x
  2. Step 2: Convert to fraction form
    80,285.61/110,731.77 = 54,812.51/x
  3. Step 3: Cross multiply
    80,285.61x = 110,731.77 × 54,812.51
  4. Step 4: Simplify right side
    80,285.61x = 6,069,485,696.78
  5. Step 5: Solve for x
    x = 6,069,485,696.78/80,285.61
  6. Step 6: Final answer
    x = 75,598.67

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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.