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Finding the Fourth Proportional to 61,607.79, 85,063.37 and 40,448.57

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Solution

The fourth proportional to 61,607.79, 85,063.37 and 40,448.57 is: 55,848.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,607.79 : 85,063.37 = 40,448.57 : x
  2. Step 2: Convert to fraction form
    61,607.79/85,063.37 = 40,448.57/x
  3. Step 3: Cross multiply
    61,607.79x = 85,063.37 × 40,448.57
  4. Step 4: Simplify right side
    61,607.79x = 3,440,691,048.32
  5. Step 5: Solve for x
    x = 3,440,691,048.32/61,607.79
  6. Step 6: Final answer
    x = 55,848.31

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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.