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Finding the Fourth Proportional to 92,883.88, 139,307.19 and 45,478.54

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Solution

The fourth proportional to 92,883.88, 139,307.19 and 45,478.54 is: 68,208.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,883.88 : 139,307.19 = 45,478.54 : x
  2. Step 2: Convert to fraction form
    92,883.88/139,307.19 = 45,478.54/x
  3. Step 3: Cross multiply
    92,883.88x = 139,307.19 × 45,478.54
  4. Step 4: Simplify right side
    92,883.88x = 6,335,487,612.70
  5. Step 5: Solve for x
    x = 6,335,487,612.70/92,883.88
  6. Step 6: Final answer
    x = 68,208.69

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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.