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Finding the Fourth Proportional to 61,676.34, 85,069.44 and 42,563.40

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Solution

The fourth proportional to 61,676.34, 85,069.44 and 42,563.40 is: 58,707.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,676.34 : 85,069.44 = 42,563.40 : x
  2. Step 2: Convert to fraction form
    61,676.34/85,069.44 = 42,563.40/x
  3. Step 3: Cross multiply
    61,676.34x = 85,069.44 × 42,563.40
  4. Step 4: Simplify right side
    61,676.34x = 3,620,844,602.50
  5. Step 5: Solve for x
    x = 3,620,844,602.50/61,676.34
  6. Step 6: Final answer
    x = 58,707.19

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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.