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Finding the Fourth Proportional to 77,855.47, 116,686.83 and 55,330.22

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Solution

The fourth proportional to 77,855.47, 116,686.83 and 55,330.22 is: 82,926.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,855.47 : 116,686.83 = 55,330.22 : x
  2. Step 2: Convert to fraction form
    77,855.47/116,686.83 = 55,330.22/x
  3. Step 3: Cross multiply
    77,855.47x = 116,686.83 × 55,330.22
  4. Step 4: Simplify right side
    77,855.47x = 6,456,307,975.00
  5. Step 5: Solve for x
    x = 6,456,307,975.00/77,855.47
  6. Step 6: Final answer
    x = 82,926.84

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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.