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Finding the Fourth Proportional to 61,559.40, 92,342.70 and 19,440.78

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Solution

The fourth proportional to 61,559.40, 92,342.70 and 19,440.78 is: 29,162.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,559.40 : 92,342.70 = 19,440.78 : x
  2. Step 2: Convert to fraction form
    61,559.40/92,342.70 = 19,440.78/x
  3. Step 3: Cross multiply
    61,559.40x = 92,342.70 × 19,440.78
  4. Step 4: Simplify right side
    61,559.40x = 1,795,214,115.31
  5. Step 5: Solve for x
    x = 1,795,214,115.31/61,559.40
  6. Step 6: Final answer
    x = 29,162.31

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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.