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Finding the Fourth Proportional to 42,971.03, 64,480.04 and 16,676.81

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Solution

The fourth proportional to 42,971.03, 64,480.04 and 16,676.81 is: 25,024.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,971.03 : 64,480.04 = 16,676.81 : x
  2. Step 2: Convert to fraction form
    42,971.03/64,480.04 = 16,676.81/x
  3. Step 3: Cross multiply
    42,971.03x = 64,480.04 × 16,676.81
  4. Step 4: Simplify right side
    42,971.03x = 1,075,320,970.09
  5. Step 5: Solve for x
    x = 1,075,320,970.09/42,971.03
  6. Step 6: Final answer
    x = 25,024.33

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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.