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Finding the Fourth Proportional to 103,613.63, 155,420.45 and 41,327.87

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Solution

The fourth proportional to 103,613.63, 155,420.45 and 41,327.87 is: 61,991.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,613.63 : 155,420.45 = 41,327.87 : x
  2. Step 2: Convert to fraction form
    103,613.63/155,420.45 = 41,327.87/x
  3. Step 3: Cross multiply
    103,613.63x = 155,420.45 × 41,327.87
  4. Step 4: Simplify right side
    103,613.63x = 6,423,196,152.94
  5. Step 5: Solve for x
    x = 6,423,196,152.94/103,613.63
  6. Step 6: Final answer
    x = 61,991.81

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1.5x scale

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.