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Finding the Fourth Proportional to 74,984.68, 112,421.44 and 45,395.52

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Solution

The fourth proportional to 74,984.68, 112,421.44 and 45,395.52 is: 68,059.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,984.68 : 112,421.44 = 45,395.52 : x
  2. Step 2: Convert to fraction form
    74,984.68/112,421.44 = 45,395.52/x
  3. Step 3: Cross multiply
    74,984.68x = 112,421.44 × 45,395.52
  4. Step 4: Simplify right side
    74,984.68x = 5,103,429,727.95
  5. Step 5: Solve for x
    x = 5,103,429,727.95/74,984.68
  6. Step 6: Final answer
    x = 68,059.63

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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.