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Finding the Fourth Proportional to 40,676.64, 61,015.68 and 14,381.76

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Solution

The fourth proportional to 40,676.64, 61,015.68 and 14,381.76 is: 21,572.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,676.64 : 61,015.68 = 14,381.76 : x
  2. Step 2: Convert to fraction form
    40,676.64/61,015.68 = 14,381.76/x
  3. Step 3: Cross multiply
    40,676.64x = 61,015.68 × 14,381.76
  4. Step 4: Simplify right side
    40,676.64x = 877,512,866.00
  5. Step 5: Solve for x
    x = 877,512,866.00/40,676.64
  6. Step 6: Final answer
    x = 21,572.89

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1.5x scale

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.