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Finding the Fourth Proportional to 56,747.70, 85,121.55 and 48,291.30

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Solution

The fourth proportional to 56,747.70, 85,121.55 and 48,291.30 is: 72,436.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,747.70 : 85,121.55 = 48,291.30 : x
  2. Step 2: Convert to fraction form
    56,747.70/85,121.55 = 48,291.30/x
  3. Step 3: Cross multiply
    56,747.70x = 85,121.55 × 48,291.30
  4. Step 4: Simplify right side
    56,747.70x = 4,110,630,307.52
  5. Step 5: Solve for x
    x = 4,110,630,307.52/56,747.70
  6. Step 6: Final answer
    x = 72,436.95

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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.