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Finding the Fourth Proportional to 72,374.90, 108,536.75 and 34,419.70

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Solution

The fourth proportional to 72,374.90, 108,536.75 and 34,419.70 is: 51,617.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,374.90 : 108,536.75 = 34,419.70 : x
  2. Step 2: Convert to fraction form
    72,374.90/108,536.75 = 34,419.70/x
  3. Step 3: Cross multiply
    72,374.90x = 108,536.75 × 34,419.70
  4. Step 4: Simplify right side
    72,374.90x = 3,735,802,373.98
  5. Step 5: Solve for x
    x = 3,735,802,373.98/72,374.90
  6. Step 6: Final answer
    x = 51,617.38

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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.