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Finding the Fourth Proportional to 39,407.88, 59,122.71 and 21,890.01

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Solution

The fourth proportional to 39,407.88, 59,122.71 and 21,890.01 is: 32,841.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,407.88 : 59,122.71 = 21,890.01 : x
  2. Step 2: Convert to fraction form
    39,407.88/59,122.71 = 21,890.01/x
  3. Step 3: Cross multiply
    39,407.88x = 59,122.71 × 21,890.01
  4. Step 4: Simplify right side
    39,407.88x = 1,294,196,713.13
  5. Step 5: Solve for x
    x = 1,294,196,713.13/39,407.88
  6. Step 6: Final answer
    x = 32,841.06

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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.