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Finding the Fourth Proportional to 103,685.70, 155,528.55 and 41,400.90

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Solution

The fourth proportional to 103,685.70, 155,528.55 and 41,400.90 is: 62,101.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,685.70 : 155,528.55 = 41,400.90 : x
  2. Step 2: Convert to fraction form
    103,685.70/155,528.55 = 41,400.90/x
  3. Step 3: Cross multiply
    103,685.70x = 155,528.55 × 41,400.90
  4. Step 4: Simplify right side
    103,685.70x = 6,439,021,945.70
  5. Step 5: Solve for x
    x = 6,439,021,945.70/103,685.70
  6. Step 6: Final answer
    x = 62,101.35

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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.