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Finding the Fourth Proportional to 61,490.60, 92,219.70 and 19,370.60

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Solution

The fourth proportional to 61,490.60, 92,219.70 and 19,370.60 is: 29,050.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,490.60 : 92,219.70 = 19,370.60 : x
  2. Step 2: Convert to fraction form
    61,490.60/92,219.70 = 19,370.60/x
  3. Step 3: Cross multiply
    61,490.60x = 92,219.70 × 19,370.60
  4. Step 4: Simplify right side
    61,490.60x = 1,786,350,920.82
  5. Step 5: Solve for x
    x = 1,786,350,920.82/61,490.60
  6. Step 6: Final answer
    x = 29,050.80

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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.