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Finding the Fourth Proportional to 70,779.77, 97,676.43 and 40,566.89

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Solution

The fourth proportional to 70,779.77, 97,676.43 and 40,566.89 is: 55,982.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,779.77 : 97,676.43 = 40,566.89 : x
  2. Step 2: Convert to fraction form
    70,779.77/97,676.43 = 40,566.89/x
  3. Step 3: Cross multiply
    70,779.77x = 97,676.43 × 40,566.89
  4. Step 4: Simplify right side
    70,779.77x = 3,962,428,991.40
  5. Step 5: Solve for x
    x = 3,962,428,991.40/70,779.77
  6. Step 6: Final answer
    x = 55,982.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.