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Finding the Fourth Proportional to 61,490.40, 92,235.60 and 19,937.40

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Solution

The fourth proportional to 61,490.40, 92,235.60 and 19,937.40 is: 29,906.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,490.40 : 92,235.60 = 19,937.40 : x
  2. Step 2: Convert to fraction form
    61,490.40/92,235.60 = 19,937.40/x
  3. Step 3: Cross multiply
    61,490.40x = 92,235.60 × 19,937.40
  4. Step 4: Simplify right side
    61,490.40x = 1,838,938,051.44
  5. Step 5: Solve for x
    x = 1,838,938,051.44/61,490.40
  6. Step 6: Final answer
    x = 29,906.10

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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.