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Finding the Fourth Proportional to 88,420, 132,633.66 and 26,090.50

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Solution

The fourth proportional to 88,420, 132,633.66 and 26,090.50 is: 39,136.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,420 : 132,633.66 = 26,090.50 : x
  2. Step 2: Convert to fraction form
    88,420/132,633.66 = 26,090.50/x
  3. Step 3: Cross multiply
    88,420x = 132,633.66 × 26,090.50
  4. Step 4: Simplify right side
    88,420x = 3,460,478,506.23
  5. Step 5: Solve for x
    x = 3,460,478,506.23/88,420
  6. Step 6: Final answer
    x = 39,136.83

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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.