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Finding the Fourth Proportional to 61,478.76, 92,240 and 30,335.88

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Solution

The fourth proportional to 61,478.76, 92,240 and 30,335.88 is: 45,514.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,478.76 : 92,240 = 30,335.88 : x
  2. Step 2: Convert to fraction form
    61,478.76/92,240 = 30,335.88/x
  3. Step 3: Cross multiply
    61,478.76x = 92,240 × 30,335.88
  4. Step 4: Simplify right side
    61,478.76x = 2,798,181,571.20
  5. Step 5: Solve for x
    x = 2,798,181,571.20/61,478.76
  6. Step 6: Final answer
    x = 45,514.61

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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.