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Finding the Fourth Proportional to 75,330.60, 112,866.30 and 49,021.80

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Solution

The fourth proportional to 75,330.60, 112,866.30 and 49,021.80 is: 73,448.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,330.60 : 112,866.30 = 49,021.80 : x
  2. Step 2: Convert to fraction form
    75,330.60/112,866.30 = 49,021.80/x
  3. Step 3: Cross multiply
    75,330.60x = 112,866.30 × 49,021.80
  4. Step 4: Simplify right side
    75,330.60x = 5,532,909,185.34
  5. Step 5: Solve for x
    x = 5,532,909,185.34/75,330.60
  6. Step 6: Final answer
    x = 73,448.36

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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.