Home / 74,640.45-103,000.35-40,648.80

Finding the Fourth Proportional to 74,640.45, 103,000.35 and 40,648.80

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Solution

The fourth proportional to 74,640.45, 103,000.35 and 40,648.80 is: 56,093.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,640.45 : 103,000.35 = 40,648.80 : x
  2. Step 2: Convert to fraction form
    74,640.45/103,000.35 = 40,648.80/x
  3. Step 3: Cross multiply
    74,640.45x = 103,000.35 × 40,648.80
  4. Step 4: Simplify right side
    74,640.45x = 4,186,840,627.08
  5. Step 5: Solve for x
    x = 4,186,840,627.08/74,640.45
  6. Step 6: Final answer
    x = 56,093.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.