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Finding the Fourth Proportional to 40,726.40, 61,100.40 and 14,428.40

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Solution

The fourth proportional to 40,726.40, 61,100.40 and 14,428.40 is: 21,646.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,726.40 : 61,100.40 = 14,428.40 : x
  2. Step 2: Convert to fraction form
    40,726.40/61,100.40 = 14,428.40/x
  3. Step 3: Cross multiply
    40,726.40x = 61,100.40 × 14,428.40
  4. Step 4: Simplify right side
    40,726.40x = 881,581,011.36
  5. Step 5: Solve for x
    x = 881,581,011.36/40,726.40
  6. Step 6: Final answer
    x = 21,646.43

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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.