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Finding the Fourth Proportional to 61,393.86, 92,088 and 19,272.96

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Solution

The fourth proportional to 61,393.86, 92,088 and 19,272.96 is: 28,908.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,393.86 : 92,088 = 19,272.96 : x
  2. Step 2: Convert to fraction form
    61,393.86/92,088 = 19,272.96/x
  3. Step 3: Cross multiply
    61,393.86x = 92,088 × 19,272.96
  4. Step 4: Simplify right side
    61,393.86x = 1,774,808,340.48
  5. Step 5: Solve for x
    x = 1,774,808,340.48/61,393.86
  6. Step 6: Final answer
    x = 28,908.56

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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.