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Finding the Fourth Proportional to 40,693, 61,039.88 and 14,402.20

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Solution

The fourth proportional to 40,693, 61,039.88 and 14,402.20 is: 21,603.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,693 : 61,039.88 = 14,402.20 : x
  2. Step 2: Convert to fraction form
    40,693/61,039.88 = 14,402.20/x
  3. Step 3: Cross multiply
    40,693x = 61,039.88 × 14,402.20
  4. Step 4: Simplify right side
    40,693x = 879,108,559.74
  5. Step 5: Solve for x
    x = 879,108,559.74/40,693
  6. Step 6: Final answer
    x = 21,603.43

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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.