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Finding the Fourth Proportional to 61,290.88, 92,014.08 and 52,115.20

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Solution

The fourth proportional to 61,290.88, 92,014.08 and 52,115.20 is: 78,238.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,290.88 : 92,014.08 = 52,115.20 : x
  2. Step 2: Convert to fraction form
    61,290.88/92,014.08 = 52,115.20/x
  3. Step 3: Cross multiply
    61,290.88x = 92,014.08 × 52,115.20
  4. Step 4: Simplify right side
    61,290.88x = 4,795,332,182.02
  5. Step 5: Solve for x
    x = 4,795,332,182.02/61,290.88
  6. Step 6: Final answer
    x = 78,238.92

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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.